overview of covid19

1. Prepared by
Ripu Chandra Das
Department of microbiology
Noakhali science and technology university.

2. COVID19
Topic:
 Introduction
 Structure
 Mode of transmission
 Symptoms
 Diagnosis
 Prevention
 treatment

3. Introduction about COVID19
It is a single strands positive sense RNA virus.
It is a enveloped virus.
Lager size virus particle.
Incubation period is about 5 days.
Zoonotic virus.
Pandemic.
Effect of temperature is unknown(controversial).

4. Structure

5. Mode of transmission
Person to person :
 Between people who are is close contact with one
another(within 6 feet).
 Through respiratory droplets produced when an
infected person coughs or sneezes.
Spread from contaminated objects or surface:
 It may be possible that person can get COVID19 by
touching surface that has virus and then touching
their own mouth, nose or eye.

6. SYMPTOMS
Following symptoms may appear 2to14 days after
exposure according to CDC:
 Fever
 Cough
 Shortness of breathing
Emergency warning symptoms:
 Difficulty of breathing or shortness of breath.
 Persistent pain or pressure in chest.
 New confusion or inability arouse.
 Bluish lips or face.

7. Diagnosis
If you have some of above symptoms ,you will be
provided to some laboratory test:
1)Serological test:
 ELISA
 Indirect fluorescent antibody test .
But serological test for COVID19 is under developed(
controversy).

8. 2)Molecular testing:
more effective
 nucleic acid amplification test(RT-PCR)
Specimen:
 Respiratory sputum.
 Throat swab.
 Nose swab.

9. Prevention
 Avoid close contact with people suffering from acute
respiratory infections.
 Practice frequent hand washing , specially after
contact with ill people.
 Avoid visiting market when live animal sold.
 Travellers with acute respiratory symptoms should
practice cough etiquette(maintain distance , cover
coughs or sneezes).

10. Treatment
Currently no antiviral medication is recommended to
treat COVID19.
Treatment is directed at relieving symptoms may
include:
 Pain reliever
 Cough syrup
 Rest
 Fluid intake

11. Controversial medications:
 Antibodies
 Cytokines
 Ribozymes
 Interferon-human serum albumin fusion protein
 RNA Aptamers
 RNA therapy

12. Age of corona virus deaths:

13. REFERENCE:
 CDC guideline
 WHO guideline
 National laboratory guideline

14. THANK YOU