Single-dose oral ciprofloxacin prophylaxis as a meningococcal meningitis outbreak response: results of a cluster-randomized trial
https://www.meningitis.org/mrf-conference-2017
Developments in the detection and understanding of meningococcal carriage, and implications for studies of the impact of MenB vaccines
https://www.meningitis.org/mrf-conference-2017
Preparedness for and response to meningococcal outbreaks: preliminary results of a Canadian Immunization Research Network (CIRN) randomized controlled trial of two schedules of 4CMenB vaccine in adolescents and young adults.
https://www.meningitis.org/mrf-conference-2017
Prospects for GBS prevention - current candidates & removing barriers to licensure of a GBS vaccine for pregnant women globally
https://www.meningitis.org/mrf-conference-2017
Developments in the detection and understanding of meningococcal carriage, and implications for studies of the impact of MenB vaccines
https://www.meningitis.org/mrf-conference-2017
Preparedness for and response to meningococcal outbreaks: preliminary results of a Canadian Immunization Research Network (CIRN) randomized controlled trial of two schedules of 4CMenB vaccine in adolescents and young adults.
https://www.meningitis.org/mrf-conference-2017
Prospects for GBS prevention - current candidates & removing barriers to licensure of a GBS vaccine for pregnant women globally
https://www.meningitis.org/mrf-conference-2017
What next for prevention of pneumococcal disease in light of serotype replacement? Is there a pathway to licensure for novel pneumococcal vaccines?
https://www.meningitis.org/mrf-conference-2017
Novartis satellite breakfast session at the Meningitis Research Foundation 2013 conference, Meningitis & Septicaemia in Children & Adults presented by Emeritus Professor Richard Moxon, Dr Jamie Findlow and Dr Simon Nadel
Current epidemiology of meningococcal disease in the African meningitis belt and new WHO outbreak response guidelines after the Meningitis Vaccine Project
http://www.meningitis.org/conference2015
What next for prevention of pneumococcal disease in light of serotype replacement? Is there a pathway to licensure for novel pneumococcal vaccines?
https://www.meningitis.org/mrf-conference-2017
Novartis satellite breakfast session at the Meningitis Research Foundation 2013 conference, Meningitis & Septicaemia in Children & Adults presented by Emeritus Professor Richard Moxon, Dr Jamie Findlow and Dr Simon Nadel
Current epidemiology of meningococcal disease in the African meningitis belt and new WHO outbreak response guidelines after the Meningitis Vaccine Project
http://www.meningitis.org/conference2015
SM2015 is an ambitious project with the Ministry of Health and local support. This presentation outlines the design and activities around the data collection and analysis of the evaluation, as well as the results, conclusions, and future activities.
Clinical Impact of New Data From AIDS 2018hivlifeinfo
Clinical Impact of New Data From AIDS 2018
July 23-27, 2018; Amsterdam, The Netherlands
Expert faculty members summarize key studies from this important annual conference.
•Describe the role of antibiotic use in the development of resistance
•Review toxicity of commonly used antibiotics
•Understand the prevalence and clinical impact of carbapenem resistant enterobacteriaceae
•State the prognosis antimicrobial resistant Staph aureus infections
• Describe the role of antibiotic use in the
development of resistance
• Review toxicity of commonly used antibiotics
• Understand the prevalence and clinical impact
of carbapenem resistant enterobacteriaceae
• State the prognosis antimicrobial resistant
Staph aureus infections
Zyvac tcv the Indian typhoid conjugate vaccination - Yamunanagar aug 2018Gaurav Gupta
Zyvac TCV by Zydus Vaccines is the Indian Typhoid Conjugate vaccination with Indian Carrier TT protein.
Recent data from Lancet regarding TCV efficacy is featured in this presentation
A detailed description of diagnosing and managing peritonitis and catheter-related infections in peritoneal dialysis patients.
A practical guide for Nephrologists and health care professionals.
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
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Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Dr Matthew Colidron @ MRF's Meningitis & Septicaemia in Children & Adults 2017+
1. Single-dose oral ciprofloxacin prophylaxis as a
meningococcal meningitis outbreak response:
results of a cluster-randomized trial
d
Madarounfa Health District, Niger
Matthew Coldiron, Epicentre
15 November 2017
2. Study design and primary objective
3-arm cluster-randomized trial to assess the impact of
prophylaxis with single-dose oral ciprofloxacin (to
household contacts and to entire villages) on the overall
meningitis attack rate during an epidemic.
Ethics review: CCNE of Niger (003/2016/CCNE) and MSF-ERB (Ref: 1603)
Funding: Médecins Sans Frontières
Full methods: Coldiron et al. Trials 2017;18:294
Trial registry: clinicaltrials.gov NCT02724046
3. Interventions
• Arm 1: standard care
• Arm 2: ciprofloxacin to household contacts
– Given by nurse at home <24h of case notification
• Arm 3: ciprofloxacin to entire village
– Village-wide distribution of ciprofloxacin <72h after declaration of first case
from a village
• Directly-observed, age-based dosing of ciprofloxacin,
including children and pregnant women
• Exhaustive censuses in each included village
4. Statistical analysis
• Cluster-level t-test of log-transformed post-randomization attack
rates
– Inverse variance weights to account for heterogeniety among clusters
• Poisson regression adjusting for (prespecified):
– age structure of villages
– time between randomization and start of epidemic
– time between randomization and reactive vaccination
– inclusion before/after rains
• ICC calculated using ANOVA
5. Resistance sub-study methods
• Sample size: 10 villages / 200 individuals in each arm (400 total)
= 20 individuals randomly selected in each of 20 villages, individual written consent
• Stool collection at days 0, 7 and 28
• Detection of the carriage of enterobacteriae resistant to cipro and/or
cefotaxime by plating on selective media
• Simplification of identification / confirmation methods after 5 villages showing very
high prevalence of resistant bacteria
• Quality control at IAME laboratory, Inserm, Paris, France
6. Timeline
20 April: Trial start criteria met in
Madarounfa District, Niger
22 April: First villages included
10 May: First rains
12 May: First vaccination began
18 May: Last village included (50
villages total in 5 health areas)
23 May: Last case notified
7. Baseline characteristics of villages
Standard care Household cipro Village-wide cipro
Number of villages 18 17 15
Total population 26 162 23 621 22 177
Age of cases, mean±SD 18±13 17±15 18±17
Female population (%) 58 55 54
Proportion <30y (%) 78 77 76
Days between inclusion and reactive
vaccination, mean±SD
11.1±7.8 10.8±9.5 12.2±8.8
Days between inclusion and first rains,
mean±SD
7.2±7.1 6.4±8.1 7.1±6.5
8. Primary results
* Adjusted for log(proportion of village <30y), days between inclusion and reactive vaccination, days from start
of epidemic, and whether inclusion of village occurred after the first day of rainfall
Standard care Household Cipro Village-wide cipro
Post-randomization cases 113 91 43
Attack rate (95%CI),
cases/100 000 people
432 (255-738) 386 (219-679) 194 (103-364)
Crude attack rate ratio
versus standard care (95%CI)
Ref
0.89 (0.44-1.82)
p=0.75
0.44 (0.18-1.12)
p=0.08
Adjusted attack rate ratio
versus standard care (95%CI)*
Ref
0.88 (0.51-1.51)
p=0.64
0.43 (0.22-0.86)
p=0.02
9. Laboratory results
• 52 samples sent from 247 post-randomization cases
– 21 NmC, 31 negative
• Standard care: 16 NmC from 28 tested
• Household ppx: 5 NmC from 16 tested
• Village-wide ppx: 0 NmC from 8 tested
11. Resistance sub-study - Results
• Baseline carriage of resistant
enterobacteriae was very high
• Trend for increased
prevalence of carriage of
Cipro-R enterobacteriae after
village-wide distribution
– Non-significant difference in
change between D7/D0 and
D28/D0 between arms (p=0.12)
No cipro Village-wide
cipro
Cipro-R (%)
D0 95 95
D7 93 97
D28 95 99
ESBL (%)
D0 91 94
D7 87 93
D28 93 93
12. Conclusion
• Village-wide prophylaxis with single-dose oral ciprofloxacin <72h after
meningitis case notification significantly reduced attack rates
– Could be an attractive new strategy for epidemic response
• Faster (can stockpile ciprofloxacin in-country)
• Possibly cheaper (low cost of cipro, no cold chain or other materials)
• 57% reduction in cases seems much larger than previous model-based estimates for
reactive vaccination
– Would have preferred more laboratory confirmations, but the confirmed cases
follow the same trends
• Need more information about potential impact of strategy on
antibiotic resistance (both of meningococcus and gut flora)
Editor's Notes
In the meningitis belt, outbreak response often includes reactive vaccination campaigns with polysaccharide vaccines, though we know that these often occur late. The situation is currently complicated by an insufficient quantity of vaccines, only 2.4 million doses of NmC-containing vaccine projected to be available for the 2018 season.
We conducted a 3-arm cluster-randomized trial to evaluate the use of ciprofloxacin as an epidemic response strategy, and the primary outcome was overall meningitis attack rate during the epidemic.
Villages were randomized after the first suspected case of meningitis was notified from the village. The first arm was our control arm. In the second arm, household members of suspected cases were offered single-dose oral ciprofloxacin within 24 hours of the case’s notification. In the third arm, we organized village-wide distributions of cipro within 72 hours of the case’s notification. All doses of ciprofloxacin were directly-observed, and offered to all persons in the village, including children and pregnant women.
Again, our outcome of interest is overall attack rate, not individual-level efficacy. Attack rates were adjusted for timing of randomization during the epidemic, the rains, and also the time between randomization and the reactive vaccination campaign that was eventually organized.
We also enrolled 200 participants from the control arm and 200 from the village-wide prophylaxis arm into a substudy to look at carriage of cipro-resistant faecal flora at baseline and then 7 and 28 days post-distributions. This sample size was based on an expected prevalence of carriage of 30% at baseline.
The trial was quick, lasting only about a month, as the epidemic came late in the season. The vaccination campaign began after about 3 weeks of trial inclusions.
We included 50 villages, with a total population of about 72 000 persons. As you can see from the table, randomization was successful.
The attack rate in the control arm was 432 per 100 000, and in the household prophylaxis arm, it was 386. In the village-wide prophylaxis arm, it was 194. This difference was significant, and after adjustment, translates into approximately 57% reduction in attack rate. As an aside, in the household prophylaxis arm, we treated an average of 4% of the village. In the village-wide prophylaxis arm, the average coverage of the distributions was 76%, which we thought was excellent given the short timeframes, most were organized within 48 hours.
About a quarter of suspected cases had samples sent, all that were positive were positive for NmC. No confirmed cases were seen in the village-wide prophylaxis arm, limiting our ability to calculate attack rate ratios for confirmed cases. But even though the denominators are relatively small, the overall trend in confirmed cases supports the primary results.
These histograms show the timing of the cases in each arm, it seems like the bulk of the difference between the village-wide prophylaxis arm occurs here, during the first week after randomization, in line with what we know about the short, highly-localized nature of epidemics in a village.
Carriage of cipro-resistant enterobacteriaceae was 95% at baseline in both arms, much higher than expected. These surprising results have been confirmed at a reference laboratory in Europe. No significant changes were seen over time, but we were underpowered to show any.
To conclude, village-wide prophylaxis with single-dose oral ciprofloxacin reduced meningitis attack rates by 57% compared to control. To our knowledge, this is the first formal evaluation of antibiotic prophylaxis as an outbreak response in the meningitis belt since the 1950s, and shows highly promising results, particularly given the overall context of today. Further research is needed, particularly into the effects of the village-wide prophylaxis strategy on antimicrobial resistance (both of the meningococcus and also of intestinal flora), hopefully in areas with lower baseline resistance. We are preparing to carry out further studies in the 2018 season if appropriate epidemics present themselves.