Prevalence of Hepatitis C Virus Infection among People Attending a Voluntary ...Conferenceproceedings
This document summarizes a study that determined the prevalence of Hepatitis C Virus (HCV) infection among 600 people attending a voluntary screening centre in Masaka, Nasarawa State, Nigeria. Blood samples were collected from each participant and tested for HCV antibodies. The overall prevalence of HCV infection in this population was 24.2%. Infection rates were highest among those aged 21-30 years at 27.4%. Education and marital status had no statistically significant relationship with viral infection. The high infection rate is alarming due to implications for end-stage liver disease. Proactive prevention and control policies are urgently needed, as well as affordable and available screening.
The Prevalence of Cytomegalovirus among Eligible Blood Donors in Keffi, NigeriaConferenceproceedings
8th International Scientific Conference on Applied
Sciences and Engineering
2-3 April, 2016
Hotel Istana Kuala Lumpur City Centre, Kuala Lumpur, Malaysia
This study evaluated the use of targeted next-generation sequencing (NGS) for preimplantation genetic diagnosis (PGD) of single-gene disorders. The study compared NGS results from embryo biopsies to results from two established PGD methods. NGS provided 100% consistency with the established methods in diagnosing point mutations and small insertions/deletions in six couples at risk of transmitting single-gene disorders. Additionally, NGS allowed for parallel single-gene disorder screening and comprehensive chromosome screening from the same biopsy sample. The study demonstrates NGS can provide accurate and consistent PGD results and could serve as a model for further development of this emerging technology in PGD.
SNP Calling & Outbreak Reconstruction in a Monomorphic PathogenJennifer Gardy
This document contains variant call format (VCF) data from whole genome sequencing of Mycobacterium tuberculosis isolates. The VCF contains single nucleotide polymorphisms (SNPs) identified by comparing isolate genomes to a reference genome. Key information provided for each variant includes position, reference and alternate alleles, quality metrics, and genotype information for an isolate sample. The data can be used for outbreak investigation and phylogenetic analysis to study transmission of the pathogen.
To analyse the benefits of strain-based over the aggregated reporting
presented at the annual European Influenza Surveillance Network meeting, Stockholm, June 2015
This document summarizes a study that analyzed Duffy blood group genotypes in Plasmodium vivax malaria patients and blood donors in four areas of the Brazilian Amazon region. The study found:
1) A high frequency of the FYA/FYB genotype in both patients and donors, followed by FYB/FYB.
2) Some Duffy genotypes showed significant differences in frequency between patients and donors.
3) Individuals with the FYA/FYB genotype may have higher susceptibility to malaria, while the presence of the FYB-33 allele could provide resistance.
Prevalence of Hepatitis C Virus Infection among People Attending a Voluntary ...Conferenceproceedings
This document summarizes a study that determined the prevalence of Hepatitis C Virus (HCV) infection among 600 people attending a voluntary screening centre in Masaka, Nasarawa State, Nigeria. Blood samples were collected from each participant and tested for HCV antibodies. The overall prevalence of HCV infection in this population was 24.2%. Infection rates were highest among those aged 21-30 years at 27.4%. Education and marital status had no statistically significant relationship with viral infection. The high infection rate is alarming due to implications for end-stage liver disease. Proactive prevention and control policies are urgently needed, as well as affordable and available screening.
The Prevalence of Cytomegalovirus among Eligible Blood Donors in Keffi, NigeriaConferenceproceedings
8th International Scientific Conference on Applied
Sciences and Engineering
2-3 April, 2016
Hotel Istana Kuala Lumpur City Centre, Kuala Lumpur, Malaysia
This study evaluated the use of targeted next-generation sequencing (NGS) for preimplantation genetic diagnosis (PGD) of single-gene disorders. The study compared NGS results from embryo biopsies to results from two established PGD methods. NGS provided 100% consistency with the established methods in diagnosing point mutations and small insertions/deletions in six couples at risk of transmitting single-gene disorders. Additionally, NGS allowed for parallel single-gene disorder screening and comprehensive chromosome screening from the same biopsy sample. The study demonstrates NGS can provide accurate and consistent PGD results and could serve as a model for further development of this emerging technology in PGD.
SNP Calling & Outbreak Reconstruction in a Monomorphic PathogenJennifer Gardy
This document contains variant call format (VCF) data from whole genome sequencing of Mycobacterium tuberculosis isolates. The VCF contains single nucleotide polymorphisms (SNPs) identified by comparing isolate genomes to a reference genome. Key information provided for each variant includes position, reference and alternate alleles, quality metrics, and genotype information for an isolate sample. The data can be used for outbreak investigation and phylogenetic analysis to study transmission of the pathogen.
To analyse the benefits of strain-based over the aggregated reporting
presented at the annual European Influenza Surveillance Network meeting, Stockholm, June 2015
This document summarizes a study that analyzed Duffy blood group genotypes in Plasmodium vivax malaria patients and blood donors in four areas of the Brazilian Amazon region. The study found:
1) A high frequency of the FYA/FYB genotype in both patients and donors, followed by FYB/FYB.
2) Some Duffy genotypes showed significant differences in frequency between patients and donors.
3) Individuals with the FYA/FYB genotype may have higher susceptibility to malaria, while the presence of the FYB-33 allele could provide resistance.
This document summarizes a seminar presentation on using bioinformatics in pandemics. The presentation was given by Puneeth V G at Sahyadri Science College and discussed how bioinformatics can help shorten the time needed to identify drug and vaccine targets during a pandemic. It explained that bioinformatics tools like genome sequencing and comparative genomics can be used to find overlapping genes between host and pathogen genomes, identify unique pathogen sequences, and ultimately find protein targets that could be used for vaccines or drugs. The presentation highlighted that bioinformatics allows for more rapid identification of targets with fewer resources during a pandemic compared to traditional methods.
The document discusses coronaviruses and their variants. It begins with a brief history of coronaviruses, noting their discovery in the 1930s and their naming due to their appearance under electron microscopy. It then discusses taxonomy and the MRCA of coronaviruses dating back to 8000 BCE. It provides details on SARS-CoV-1 and SARS-CoV-2, including their structures, receptors, and differences in infectiousness. It then summarizes transmission patterns and clinical symptoms of COVID-19 before discussing immune evasion strategies of coronaviruses and challenges to vaccine development. It concludes with an overview of coronavirus variants and classification systems.
Presentation from the ECDC expert consultation on Whole Genome Sequencing organised by the European Centre of Disease Prevention and Control - Stockholm, 19 November 2015
This document summarizes a study that evaluated the Exome Aggregation Consortium (ExAC) database as a control cohort for classifying genetic variants. The researchers analyzed variants from 19 genes related to dominant and recessive disorders. They found:
1) The carrier frequencies and ethnic distributions of pathogenic variants in ExAC were generally consistent with published estimates, indicating ExAC is not overrepresented for pathogenic variants.
2) Only 3 of 871 pathogenic variants exceeded the estimated maximal pathogenic allele frequency for each gene.
3) Variants with frequencies above estimated thresholds were often reclassified as benign or uncertain significance.
This document summarizes research on analyzing clinical and molecular cancer data to enable precision cancer medicine. It discusses analyzing tumor heterogeneity, transcriptional subtyping of colorectal cancer, identifying biomarkers of drug response, and exploring these concepts using patient-derived xenograft models. Key findings include identifying microRNAs that antagonize a poor-prognosis colorectal cancer subtype and finding kinase genes that are therapeutic targets in otherwise resistant tumor cells and xenografts.
This document discusses genetic testing regulations in New York state and the addition of new oncology genetic tests at Montefiore Medical Center. Key points:
1. Genetic testing in New York is regulated by the state Department of Health and requires a clinical laboratory permit, director certification, successful proficiency testing, and reporting results only to authorized individuals like physicians.
2. Montefiore's molecular genetics and cytogenetics labs offer a variety of genetic tests and are looking to add new targeted sequencing panels for cancer therapies.
3. An advisory committee evaluates new tests based on analytical and clinical validity and utility, test volume, and CPT codes before adding them.
Bioinformatics-driven discovery of EGFR mutant Lung CancerPreveenRamamoorthy
This document describes a study that used an integrative systems biology approach to identify potential drug combinations for overcoming resistance to EGFR tyrosine kinase inhibitors (TKIs) in EGFR-mutant non-small cell lung cancer (NSCLC). The researchers performed a functional genetic screen of kinases in an EGFR-mutant NSCLC cell line intrinsically resistant to EGFR TKIs. They analyzed the screen data using bioinformatics to identify essential kinases. They also used RNA-seq and bioinformatics to identify differentially expressed kinases. By integrating these data, they identified candidate kinases and used a kinase connectivity map (K-Map) to predict kinase inhibitors, identifying bosutinib. In vitro validation showed bos
Plasma levels of circulating nucleic acids (CNAs) were significantly higher in patients with Plasmodium vivax malaria compared to healthy donors. CNAs levels strongly correlated with clinical markers of malaria morbidity, including fever and thrombocytopenia. Higher CNAs levels were also associated with a more severe clinical presentation based on a scoring system. These findings suggest that CNAs have potential as sensitive biomarkers for assessing severity of P. vivax malaria infections.
This document summarizes the validation of the Cepheid Xpert Flu A Real Time RT-PCR detection panel for Emergency Use Authorization. The study compared results of the Xpert panel to the Luminex Molecular Diagnostics xTAG Respiratory Viral Panel and Focus Diagnostics Influenza A/H1N1 Real Time RT-PCR assay on clinical specimens. The Xpert panel demonstrated 91.2% sensitivity and 99.4% specificity for influenza A detection compared to Luminex, and 92.1% sensitivity and 100% specificity for H1N1 detection compared to Focus Diagnostics. The results supported Emergency Use Authorization of the Xpert panel for qualitative detection of 2009 H1N1 viral RNA.
Researchers have discovered a novel maturation mechanism employed by the hepatitis B virus (HBV) that improves its ability to infect liver cells. HBV particles are released from infected cells in an "immature" form that cannot bind to liver cells. Over time, the particles undergo a slow maturation process where they switch to a "mature" form able to bind to liver cells. This allows the particles to circulate in the bloodstream until reaching the liver, where they can then infect cells. This explains how HBV can specifically target liver cells for infection even when few virus particles enter the body. The finding could help develop new drugs that inhibit the maturation process and prevent HBV from becoming infectious.
This study sequenced the genomes of 11 clinical Mycobacterium abscessus isolates from 8 US patients with pulmonary infections. Core genome analysis compared these isolates to 30 globally diverse strains to investigate population structure. Longitudinally sampled isolates showed very few genetic differences, suggesting homogenous infection populations. Genome content variation between isolates was 0.3-8.3% compared to the reference strain, indicating plasticity.
A Retrospective Analysis of Exome Sequencing Cases Using the GenePool™ Genomi...Antoaneta Vladimirova
- GenePool, a cloud-based genomics software platform, was used to retrospectively analyze exome sequencing data from over two dozen probands and their families to help diagnose various medical conditions.
- For each proband, GenePool identified one or more likely causative gene variants that matched the family's inheritance pattern and the proband's clinical presentation.
- GenePool's integrated analysis workflows and ability to combine genomic and clinical data helped efficiently analyze each family and prioritize candidate variants and genes.
- This study demonstrates GenePool's utility as a tool for precision diagnosis and its high level of concordance with the Clinic for Special Children's own analysis results.
This study evaluated the frequency of asymptomatic Plasmodium carriers (APCs) among blood donors in four blood banks in the Brazilian Amazon region. Blood samples from 400 donors who passed screening were tested using PCR to detect Plasmodium DNA. The positivity rate varied from 1-3% between blood banks, with an overall rate of 2.3%. All positive samples contained mixed infections of P. vivax and P. falciparum. While screening methods used by the blood banks did not detect the infections, PCR revealed its superiority for detecting low levels of parasites. The results emphasize the need to improve screening for APCs in blood banks in malaria endemic areas to control transfusion-transmitted malaria.
This document summarizes the results of sequencing and analyzing genomes of Mycobacterium tuberculosis isolates from 5 patients with extra-pulmonary tuberculosis. Key findings include:
1. The isolates showed genetic heterogeneity, with variations in single nucleotide polymorphisms and presence/absence of genes compared to the reference genome.
2. One isolate (LN8) showed the highest number of unique single nucleotide variations and gene deletions, indicating it had diverged more than the others.
3. Several genes missing or disrupted in the isolates are involved in important processes like cell wall biosynthesis and membrane transport, which may influence pathogenesis.
4. The variations identified suggest next-generation sequencing can effectively detect small genomic changes in M
This research article evaluated the performance of the circulating cathodic antigen immuno-chromatographic test (CCA-ICT) to diagnose Schistosoma mansoni infection in Brazil compared to the standard Kato-Katz stool test. The study analyzed urine and stool samples from 130 individuals in endemic and non-endemic areas and found that the CCA-ICT's sensitivity and specificity depended on whether a trace test result was considered positive or negative. While the CCA-ICT correlated with egg counts, it misdiagnosed approximately 15% of Kato-Katz positive individuals who had light infections. The researchers concluded that the CCA-ICT showed reasonable diagnostic performance but lacked sufficient sensitivity to be used as a standalone
Fluoroquinolone resistant rectal colonization predicts risk of infectious com...TC İÜ İTF Üroloji AD
This study analyzed data from 2,673 men who underwent rectal culture before transrectal prostate biopsy at six institutions between 2007-2013. The study found that 20.5% of rectal cultures showed fluoroquinolone resistant (FQR) bacteria. Men with positive FQR cultures had higher rates of post-biopsy infection (6.6% vs 1.6%) and hospitalization (4.4% vs 0.9%) compared to men with negative cultures. Logistic regression showed that positive FQR culture was associated with significantly increased risk of both post-biopsy infection and hospitalization. The findings suggest that rectal culture can help identify men at high risk for infectious complications following prostate biopsy.
This study aimed to develop and validate a clinical prediction score to identify patients with healthcare-acquired urinary tract infections caused by fluoroquinolone-resistant gram-negative bacteria. Researchers analyzed data from a case-control study of 514 patients from two hospitals to identify risk factors for fluoroquinolone resistance. A prediction score was developed based on risk factors like prior antibiotic use, medical conditions, and place of residence. The score was validated in a separate cohort and demonstrated 75% sensitivity and 73% specificity in identifying resistant infections, with an area under the ROC curve of 0.816. External validation is still needed before implementing the score in clinical practice to optimize antibiotic treatment.
This document summarizes a seminar presentation on using bioinformatics in pandemics. The presentation was given by Puneeth V G at Sahyadri Science College and discussed how bioinformatics can help shorten the time needed to identify drug and vaccine targets during a pandemic. It explained that bioinformatics tools like genome sequencing and comparative genomics can be used to find overlapping genes between host and pathogen genomes, identify unique pathogen sequences, and ultimately find protein targets that could be used for vaccines or drugs. The presentation highlighted that bioinformatics allows for more rapid identification of targets with fewer resources during a pandemic compared to traditional methods.
The document discusses coronaviruses and their variants. It begins with a brief history of coronaviruses, noting their discovery in the 1930s and their naming due to their appearance under electron microscopy. It then discusses taxonomy and the MRCA of coronaviruses dating back to 8000 BCE. It provides details on SARS-CoV-1 and SARS-CoV-2, including their structures, receptors, and differences in infectiousness. It then summarizes transmission patterns and clinical symptoms of COVID-19 before discussing immune evasion strategies of coronaviruses and challenges to vaccine development. It concludes with an overview of coronavirus variants and classification systems.
Presentation from the ECDC expert consultation on Whole Genome Sequencing organised by the European Centre of Disease Prevention and Control - Stockholm, 19 November 2015
This document summarizes a study that evaluated the Exome Aggregation Consortium (ExAC) database as a control cohort for classifying genetic variants. The researchers analyzed variants from 19 genes related to dominant and recessive disorders. They found:
1) The carrier frequencies and ethnic distributions of pathogenic variants in ExAC were generally consistent with published estimates, indicating ExAC is not overrepresented for pathogenic variants.
2) Only 3 of 871 pathogenic variants exceeded the estimated maximal pathogenic allele frequency for each gene.
3) Variants with frequencies above estimated thresholds were often reclassified as benign or uncertain significance.
This document summarizes research on analyzing clinical and molecular cancer data to enable precision cancer medicine. It discusses analyzing tumor heterogeneity, transcriptional subtyping of colorectal cancer, identifying biomarkers of drug response, and exploring these concepts using patient-derived xenograft models. Key findings include identifying microRNAs that antagonize a poor-prognosis colorectal cancer subtype and finding kinase genes that are therapeutic targets in otherwise resistant tumor cells and xenografts.
This document discusses genetic testing regulations in New York state and the addition of new oncology genetic tests at Montefiore Medical Center. Key points:
1. Genetic testing in New York is regulated by the state Department of Health and requires a clinical laboratory permit, director certification, successful proficiency testing, and reporting results only to authorized individuals like physicians.
2. Montefiore's molecular genetics and cytogenetics labs offer a variety of genetic tests and are looking to add new targeted sequencing panels for cancer therapies.
3. An advisory committee evaluates new tests based on analytical and clinical validity and utility, test volume, and CPT codes before adding them.
Bioinformatics-driven discovery of EGFR mutant Lung CancerPreveenRamamoorthy
This document describes a study that used an integrative systems biology approach to identify potential drug combinations for overcoming resistance to EGFR tyrosine kinase inhibitors (TKIs) in EGFR-mutant non-small cell lung cancer (NSCLC). The researchers performed a functional genetic screen of kinases in an EGFR-mutant NSCLC cell line intrinsically resistant to EGFR TKIs. They analyzed the screen data using bioinformatics to identify essential kinases. They also used RNA-seq and bioinformatics to identify differentially expressed kinases. By integrating these data, they identified candidate kinases and used a kinase connectivity map (K-Map) to predict kinase inhibitors, identifying bosutinib. In vitro validation showed bos
Plasma levels of circulating nucleic acids (CNAs) were significantly higher in patients with Plasmodium vivax malaria compared to healthy donors. CNAs levels strongly correlated with clinical markers of malaria morbidity, including fever and thrombocytopenia. Higher CNAs levels were also associated with a more severe clinical presentation based on a scoring system. These findings suggest that CNAs have potential as sensitive biomarkers for assessing severity of P. vivax malaria infections.
This document summarizes the validation of the Cepheid Xpert Flu A Real Time RT-PCR detection panel for Emergency Use Authorization. The study compared results of the Xpert panel to the Luminex Molecular Diagnostics xTAG Respiratory Viral Panel and Focus Diagnostics Influenza A/H1N1 Real Time RT-PCR assay on clinical specimens. The Xpert panel demonstrated 91.2% sensitivity and 99.4% specificity for influenza A detection compared to Luminex, and 92.1% sensitivity and 100% specificity for H1N1 detection compared to Focus Diagnostics. The results supported Emergency Use Authorization of the Xpert panel for qualitative detection of 2009 H1N1 viral RNA.
Researchers have discovered a novel maturation mechanism employed by the hepatitis B virus (HBV) that improves its ability to infect liver cells. HBV particles are released from infected cells in an "immature" form that cannot bind to liver cells. Over time, the particles undergo a slow maturation process where they switch to a "mature" form able to bind to liver cells. This allows the particles to circulate in the bloodstream until reaching the liver, where they can then infect cells. This explains how HBV can specifically target liver cells for infection even when few virus particles enter the body. The finding could help develop new drugs that inhibit the maturation process and prevent HBV from becoming infectious.
This study sequenced the genomes of 11 clinical Mycobacterium abscessus isolates from 8 US patients with pulmonary infections. Core genome analysis compared these isolates to 30 globally diverse strains to investigate population structure. Longitudinally sampled isolates showed very few genetic differences, suggesting homogenous infection populations. Genome content variation between isolates was 0.3-8.3% compared to the reference strain, indicating plasticity.
A Retrospective Analysis of Exome Sequencing Cases Using the GenePool™ Genomi...Antoaneta Vladimirova
- GenePool, a cloud-based genomics software platform, was used to retrospectively analyze exome sequencing data from over two dozen probands and their families to help diagnose various medical conditions.
- For each proband, GenePool identified one or more likely causative gene variants that matched the family's inheritance pattern and the proband's clinical presentation.
- GenePool's integrated analysis workflows and ability to combine genomic and clinical data helped efficiently analyze each family and prioritize candidate variants and genes.
- This study demonstrates GenePool's utility as a tool for precision diagnosis and its high level of concordance with the Clinic for Special Children's own analysis results.
This study evaluated the frequency of asymptomatic Plasmodium carriers (APCs) among blood donors in four blood banks in the Brazilian Amazon region. Blood samples from 400 donors who passed screening were tested using PCR to detect Plasmodium DNA. The positivity rate varied from 1-3% between blood banks, with an overall rate of 2.3%. All positive samples contained mixed infections of P. vivax and P. falciparum. While screening methods used by the blood banks did not detect the infections, PCR revealed its superiority for detecting low levels of parasites. The results emphasize the need to improve screening for APCs in blood banks in malaria endemic areas to control transfusion-transmitted malaria.
This document summarizes the results of sequencing and analyzing genomes of Mycobacterium tuberculosis isolates from 5 patients with extra-pulmonary tuberculosis. Key findings include:
1. The isolates showed genetic heterogeneity, with variations in single nucleotide polymorphisms and presence/absence of genes compared to the reference genome.
2. One isolate (LN8) showed the highest number of unique single nucleotide variations and gene deletions, indicating it had diverged more than the others.
3. Several genes missing or disrupted in the isolates are involved in important processes like cell wall biosynthesis and membrane transport, which may influence pathogenesis.
4. The variations identified suggest next-generation sequencing can effectively detect small genomic changes in M
This research article evaluated the performance of the circulating cathodic antigen immuno-chromatographic test (CCA-ICT) to diagnose Schistosoma mansoni infection in Brazil compared to the standard Kato-Katz stool test. The study analyzed urine and stool samples from 130 individuals in endemic and non-endemic areas and found that the CCA-ICT's sensitivity and specificity depended on whether a trace test result was considered positive or negative. While the CCA-ICT correlated with egg counts, it misdiagnosed approximately 15% of Kato-Katz positive individuals who had light infections. The researchers concluded that the CCA-ICT showed reasonable diagnostic performance but lacked sufficient sensitivity to be used as a standalone
Fluoroquinolone resistant rectal colonization predicts risk of infectious com...TC İÜ İTF Üroloji AD
This study analyzed data from 2,673 men who underwent rectal culture before transrectal prostate biopsy at six institutions between 2007-2013. The study found that 20.5% of rectal cultures showed fluoroquinolone resistant (FQR) bacteria. Men with positive FQR cultures had higher rates of post-biopsy infection (6.6% vs 1.6%) and hospitalization (4.4% vs 0.9%) compared to men with negative cultures. Logistic regression showed that positive FQR culture was associated with significantly increased risk of both post-biopsy infection and hospitalization. The findings suggest that rectal culture can help identify men at high risk for infectious complications following prostate biopsy.
This study aimed to develop and validate a clinical prediction score to identify patients with healthcare-acquired urinary tract infections caused by fluoroquinolone-resistant gram-negative bacteria. Researchers analyzed data from a case-control study of 514 patients from two hospitals to identify risk factors for fluoroquinolone resistance. A prediction score was developed based on risk factors like prior antibiotic use, medical conditions, and place of residence. The score was validated in a separate cohort and demonstrated 75% sensitivity and 73% specificity in identifying resistant infections, with an area under the ROC curve of 0.816. External validation is still needed before implementing the score in clinical practice to optimize antibiotic treatment.
This study aimed to develop an unbiased RNA profiling approach for the early detection of colorectal cancer (CRC) and advanced adenomas (AA) using blood samples. The researchers combined a literature review with microarray analysis of circulating RNA purified from plasma to identify RNA biomarker panels. They tested the panels on two cohorts, detecting CRC with 75% sensitivity and 93% specificity using an 8-gene panel, and detecting AA with 60% sensitivity and 87% specificity using a 2-gene panel. The study demonstrates the feasibility of unbiased molecular diagnosis of CRC and AA from blood and introduces circulating RNA profiling as a potential non-invasive screening approach.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
A novel coronavirus from patients with pneumonia in china, 2019MANUELPERALTA33
- In December 2019, a cluster of pneumonia cases of unknown cause emerged in Wuhan, China and was linked to a seafood market.
- Researchers isolated a novel coronavirus (2019-nCoV) from bronchoalveolar lavage fluid of patients with pneumonia.
- The virus was able to infect and replicate in human airway epithelial cells in vitro, causing cytopathic effects. Electron microscopy images showed spherical virus particles around 60-140nm in diameter with distinctive spikes.
A novel coronavirus from patients with pneumonia in china, 2019Juan Rubio
- In late December 2019, a cluster of patients with pneumonia of unknown cause was linked to a seafood market in Wuhan, China. Through testing samples from these patients, a novel coronavirus was discovered and named 2019-nCoV.
- Using samples from the pneumonia patients, researchers were able to isolate and culture the novel coronavirus (2019-nCoV) using human airway epithelial cells. Electron microscopy of the cultured cells showed coronavirus particles.
- Genomic sequencing of samples from the patients identified the virus as a new strain of coronavirus within the subgenus sarbecovirus, most closely related to SARS-CoV and MERS-CoV but distinct from them.
This study examined risk factors for HCV infection and severity of liver disease in 86 Mexican women reactive for anti-HCV antibodies. Surgery (80%) and blood transfusions before 1993 (58%) were main risk factors, with 52% having both. The most common reasons for surgery and transfusion were obstetric/gynecologic (74% and 68%). 64% were HCV RNA positive. Age and history of transfusion before 1993 predicted cirrhosis. Anti-HCV levels correlated with time since transfusion but not age. HBV co-infection rate was low (5%) and did not influence severity.
IOSRPHR(www.iosrphr.org) IOSR Journal of Pharmacyiosrphr_editor
This document summarizes a study that examined the oral microbial pathogens isolated in newly diagnosed HIV positive patients in Dakar, Senegal. 57 newly diagnosed HIV patients were included in the study. The patients' CD4 counts, viral loads, and oral examinations were analyzed. Common oral lesions found were pseudomembranous candidiasis, xerostomia, and gingivitis. Microbial pathogens isolated included Pseudomonas, Klebsiella, Proteus, Staphylococcus aureus, and Escherichia coli. There was an inverse correlation between CD4 count and viral load. The frequency of oral lesions and microbial isolates increased with higher viral loads. Most patients had CD4 counts below
IOSRPHR(www.iosrphr.org) IOSR Journal of Pharmacyiosrphr_editor
This document summarizes a study that examined the oral microbial pathogens isolated in newly diagnosed HIV positive patients in Dakar, Senegal. 57 newly diagnosed HIV patients were included in the study. Their CD4 counts, viral loads, and oral examinations were performed. Samples found the most common microbial pathogens were Pseudomonas, Klebsiella, and Proteus. An inverse correlation was found between CD4 count and viral load. The frequency of oral lesions and microbial isolates increased with higher viral loads. 70% of patients had CD4 counts below 500. The study concludes maintaining a low oral microbial load is important for preventing opportunistic infections in HIV patients.
HPV infection, cervical abnormalities, and cancer in HIV-infected women in Mu...Dr.Samsuddin Khan
Background: HIV-infected women are at a higher risk of cervical intraepithelial neoplasia (CIN) and cancer than women in the general population, partly due to a high prevalence of persistent human papillomavirus (HPV) infection. The aim of the study was to assess the burden of HPV infection, cervical abnormalities, and cervical cancer among a cohort of HIV-infected women as part of a routine screening in an urban overpopulated slum setting in Mumbai, India.
Methods: From May 2010 to October 2010, Médecins Sans Frontières and Tata Memorial Hospital Mumbai offered routine annual Pap smears and HPV DNA testing of women attending an antiretroviral therapy (ART) clinic and a 12-month follow-up. Women with abnormal test results were offered cervical biopsy and treatment, including treatment for sexually transmitted infections (STIs).
Results: Ninety-five women were screened. Median age was 38 years (IQR: 33–41); median nadir CD4-count 143 cells/µL (IQR: 79–270); and median time on ART 23 months (IQR:10–41). HPV DNA was detected in 30/94 women (32%), and 18/94 (19%) showed either low-grade or high-grade squamous intraepithelial lesions (LSIL/HSIL) on Pap smear. Overall, >50% had cervical inflammatory reactions including STIs. Of the 43 women with a cervical biopsy, eight (8.4%) had CIN-1, five (5.3%) CIN-2, and two (2.1%) carcinoma in situ. All but one had HPV DNA detected (risk ratio: 11, 95% confidence interval: 3.3–34). By October 2011, 56 women had completed the 12-month follow-up and had been rescreened. No new cases of HPV infection/LSIL/HSIL were detected.
Conclusion: The high prevalence of HPV infection, STIs, and cervical lesions among women attending an ART clinic demonstrates a need for routine screening. Simple, one-stop screening strategies are needed. The optimal screening interval, especially when resources are limited, needs to be determined.
Transfusion transmitted ZIKV: BSRI/UCSF/UCD studies to safeguard the global b...UCSFGlobalHealthSciences
1) Studies led by BSRI/UCSF aim to safeguard the global blood supply from Zika virus transmission by characterizing viral and immune markers in infected blood donors. Repositories of samples from donors and recipients will help understand Zika virus epidemiology, infectivity, and pathogenesis.
2) Case-control studies of over 3,500 Brazilian transfusion recipients will determine Zika virus and other arbovirus infection rates and evaluate symptoms in infected recipients. Testing over 16,000 Brazilian blood donor samples will provide data on Zika virus, Chikungunya virus, and dengue virus viremia rates in donors.
3) A study of 1,500 pregnant Brazilian women will characterize Zika
This study investigated the seroprevalence of hepatitis B virus (HBV) infection in outpatients at a district hospital in Mardan, Pakistan. The study found that 34.8% of the 270 patients tested positive for HBV DNA using real-time PCR. Males had a slightly higher prevalence of HBV (34.5%) than females (35.1%). The highest prevalence was found in patients aged 21-40 years old (38.9%). When analyzing viral load levels, 50% of positive patients had a low viral load, 33% had an intermediate load, and 17% had a high viral load. Females were more likely to have a high viral load compared to males. The study provides
Testing Donor For Anti HbcIgM to Enhance Blood Safetyiosrjce
This study tested 2,488 blood donors in India for hepatitis B surface antigen (HBsAg) and hepatitis B core antibody IgM (Anti-HbcIgM) to enhance blood safety. 1.29% of donors tested positive for HBsAg and 0.6% tested positive for only Anti-HbcIgM. A total of 1.89% showed evidence of hepatitis B infection. Testing only for HBsAg is not sufficient for eliminating HBV due to window periods and occult infections. The study recommends including Anti-HbcIgM screening in addition to HBsAg to further reduce transfusion-associated HBV infections in India.
1. The study assessed the accuracy of three diagnostic tests for Strongyloides stercoralis infection: stool examination, serology using an ELISA test, and PCR-based detection of parasite DNA in urine.
2. Using Bayesian latent class modeling, the study found that stool examination had low sensitivity for detecting low-level infections, while serology and urine DNA detection were more sensitive methods.
3. The results suggest that using both serology and urine DNA detection provides a more sensitive approach for diagnosing Strongyloides infection compared to stool examination alone.
This document discusses pool testing as a strategy to increase testing capacity and reduce costs during the COVID-19 pandemic. Pool testing involves combining multiple patient samples and testing them as a single pool. If the pool tests negative, then all samples in that pool are considered negative. Only positive pools would require individual re-testing to identify the positive sample(s). The document recommends pool testing in areas with low COVID-19 prevalence (<5%) as a way to screen asymptomatic individuals or for community surveillance. Pool sizes should be adjusted based on local positivity rates. Pool testing has been used successfully for other infectious diseases and could help address shortages in testing capacity and supplies for COVID-19.
Malaria is still considered globally as a leading cause of morbidity with Nigeria carrying the highest burden of 19%. Coinfection of malaria and Human Immunodeficiency Virus (HIV) accelerate disease progression of HIV/AIDS subjects. This study investigated the prevalence and predictors of malaria among HIV infected subjects attending the antiretroviral therapy Clinic at Federal the Medical Centre, Keffi, Nigeria. After ethical clearance, 200 whole blood specimens were collected from patients who gave informed consent and completed a self-structured questionnaire. The specimens were examined for malarial parasite using rapid kits and microscopy. The overall prevalence of the infection was 78/200 (39.0%). The prevalence was higher in male (44.7%) than female (34.0%) subjects. Those subjects aged < 20 years (54.5), male gender (44.7%), non-formal education holders (61.5%), farmers (62.5%), stream water users (48.1%), those that lives in rural setting (43.6%), those that do not use Insecticides Treated Nets (ITNs) (39.4%) and swampy environment dwellers (41.7%) were identified predictors for malaria infection in the area. All the predictors studied did not show any statistically significant difference with the infection but some arithmetic difference exists (P > 0.05). The 39.0% prevalence of malaria in HIV infected subjects is a public health concern. Therefore, Public health surveillance and health education among HIV population should be advocated to help eradicate malaria comes 2030. Further study that will characterize the genes of the parasite should be carried out.
This systematic review analyzed 22 studies involving over 825,000 people in Mexico to determine the prevalence of hepatitis C virus (HCV) infection. The studies tested asymptomatic low-risk populations, mainly blood donors, for anti-HCV antibodies between 1993-2005. The weighted mean prevalence of anti-HCV was 0.37%, and most studies reported a prevalence below 1%. Blood transfusion was the main risk factor reported. Genotype 1 was the most prevalent among those with confirmed HCV infection, with subtype 1b being the most common. The review concludes that HCV prevalence in Mexico may be lower than previous estimates of 1%, and calls for a nationwide study to better determine the epidemiology of HCV in the country.
The relationship between the molecular epidemiology of hepatitis c and the be...Alexander Decker
This study examined the molecular epidemiology and prevalence of hepatitis C virus (HCV) infection in Jordan. Researchers tested 1929 patients for HCV antibodies between 2010-2011. A total of 149 patients (9%) tested positive, with the infection being twice as common in males compared to females. The most common causes of infection were blood transfusion (68%), kidney dialysis (17%), addiction treatment centers (6%), and unknown causes (9%). HCV RNA detection and genotyping was performed on positive samples. The results suggest blood transfusion is a major route of HCV transmission in Jordan and screening of blood donors has helped reduce prevalence over time.
This document summarizes key issues discussed at a consensus conference on product safety in 2018. It covers:
1) Selection and screening processes in the aftermath of relaxing donor deferral policies for men who have sex with men.
2) Emerging viruses like Zika and transmissible spongiform encephalopathies like variant Creutzfeldt-Jakob disease.
3) Studies showing blood infectivity in variant Creutzfeldt-Jakob disease but not sporadic Creutzfeldt-Jakob disease patients.
1) A study found that about half of patients treated for HIV early in infection failed to develop antibodies detectable by standard HIV tests or developed antibodies that later disappeared.
2) Current HIV diagnostic tests are designed based on the natural progression of HIV infection without treatment, but early treatment interrupts antibody development.
3) With increased emphasis on rapid treatment even in acute HIV, the limitations of diagnostic tests need to be addressed to accurately diagnose HIV in people on early treatment.
Similar to Prevalence of Hepatitis B Virus Infection among People Attending a Hepatitis Treatment and Control Centre in Karu, Nigeria (20)
1) The paper presents a probability analysis of slope stability using the Monte Carlo simulation method to account for uncertainty in parameters like pore water pressure, cohesion, and internal angle of friction.
2) The results of the Monte Carlo simulation method are compared to other recognized methods of slope stability analysis like Bishop simplified, Fellenuis, Janbu simplified and corrected, Spencer and Lowe-Karafiath which use limit equilibrium.
3) The probability analysis finds that the failure probability is most affected by the standard deviation of pore water pressure, cohesion, internal angle of friction, and correlation coefficient between parameters, though individual limit equilibrium methods only account for one of these parameters in each analysis.
This document summarizes an abstract from the 9th International Scientific Conference on Applied Sciences and Engineering. The abstract discusses some biochemical markers that can predict pre-eclampsia. It states that tumor necrosis factor alpha (TNF-α) directly damages vascular endothelial cells and increases endothelial permeability, which may result in secretion of vasoactive substances and increased vascular permeability and coagulation. This involvement of TNF-α in the pathogenesis of pre-eclampsia means it may identify patients at high risk for the condition and serve as a marker of severity. Preeclamptic women also have abnormal lipid metabolism and profiles due to pre-eclampsia, and this alteration in lipid metabolism may play a key role in developing symptoms.
Chapter wise All Notes of First year Basic Civil Engineering.pptxDenish Jangid
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
Level 3 NCEA - NZ: A Nation In the Making 1872 - 1900 SML.pptHenry Hollis
The History of NZ 1870-1900.
Making of a Nation.
From the NZ Wars to Liberals,
Richard Seddon, George Grey,
Social Laboratory, New Zealand,
Confiscations, Kotahitanga, Kingitanga, Parliament, Suffrage, Repudiation, Economic Change, Agriculture, Gold Mining, Timber, Flax, Sheep, Dairying,
This presentation was provided by Rebecca Benner, Ph.D., of the American Society of Anesthesiologists, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
A Visual Guide to 1 Samuel | A Tale of Two HeartsSteve Thomason
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
The chapter Lifelines of National Economy in Class 10 Geography focuses on the various modes of transportation and communication that play a vital role in the economic development of a country. These lifelines are crucial for the movement of goods, services, and people, thereby connecting different regions and promoting economic activities.
Prevalence of Hepatitis B Virus Infection among People Attending a Hepatitis Treatment and Control Centre in Karu, Nigeria
1. Abstract of Applied Sciences and Engineering, 2016, Vol.7
DOI: 10.18488/journal.1001/2016.7/1001.7
7th
International Scientific Conference on Applied
Sciences and Engineering
27-28 February, 2016
Flora Grand Hotel, Dubai
Conference Website: www.scihost.org
9
Paper ID: 30/16/ 7
th
ISCASE
Prevalence of Hepatitis B Virus Infection among People
Attending a Hepatitis Treatment and Control Centre in Karu,
Nigeria
Grace Pennap1
--- Danladi HF2
1,2
Microbiology Unit, Nasarawa State University, Keffi, Nasarawa State, Nigeria
Abstract
Hepatitis B virus (HBV) has remained a recurring decimal in vertical transmission,
blood transfusion, liver cirrhosis and hepatocellular carcinoma. This study was
therefore conducted to determine the prevalence of HBV infection in people wishing to
know their serostatus. Six hundred and one people were enrolled for the study. Three
ml of blood was collected from each participant, the serum harvested and tested for
Hepatitis B surface antigen( HBsAg) as the seromarker for HBV infection using a rapid
test kit(ACON USA). Their sociodemographic information was obtained through oral
interview. Of the 601 participants screened, 39.1% were reactive for HBsAg with a sex
stratified prevalence of 32.4% in males and 31.4% in females. With respect to age
those aged 15 years and below had the least infection prevalence(15.4%) while the
highest was among those aged 31 – 35 years(p > 0.05). Other parameters studied as
possible risk factors included marital status, history of HBV vaccination and occupation
(p > 0.05). The present study reported a very high HBV infection prevalence with
obscured risk factors. This is a cause for alarm because of the implication of many
people with the likelihood of transiting to end-stage liver diseases. It is vaccine
preventable so urgent proactive strategies should be put in place for increased vaccine
uptake and prevention and control measures.
Keywords: Hepatitis B Virus, Treatment and Control