Coronavirus

2. a feeling of sickness with an inclination to vomit.
6. the sudden or violent start of something unwelcome.
8. having the right to do or obtain something; satisfying the appropriate conditions.
9. a condition in which feces are discharged from the bowels frequently and in a liquid form.
11. an abnormally high body temperature, usually accompanied by shivering, headache, and in severe instances, delirium.
13. change or cause to change in form or nature; undergo or cause to undergo change in a gene or genes.
16. a detailed inspection or investigation.
18. existing or taking place within, or administered into, a vein or veins.
20. likely to be transmitted to people, organisms, etc., through the environment.

1. the identification of the nature of an illness or other problem by examination of the symptoms.
3. having official permission or approval.
4. causing death.
5. a widespread occurrence of an infectious disease over a whole country or the world at a particular time.
7. the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.
10. medical care given to a patient for an illness or injury.
12. to give help or assistance; to hold something or someone up.
14. a physical or mental feature which is regarded as indicating a condition of disease
15. a substance used to stimulate immunity to a particular infectious disease or pathogen
17. a measure taken in advance to prevent something dangerous from happening.
19. conditions or practices conducive to maintaining health and preventing disease, especially through cleanliness.