Neelam kumari

COVID-19 is the disease caused by SARS-CoV-2, the coronavirus that emerged in December 2019. COVID-19 can be severe and has caused millions of deaths worldwide and lasting health problems in some who have survived the illness. The coronavirus can be spread from person to person. It is diagnosed with a laboratory test. COVID-19 vaccines have been authorized for emergency use by the U.S. Food and Drug Administration, and vaccination programs are in progress across the U.S. and many parts of the world. Prevention involves physical distancing, mask-wearing, hand hygiene, and staying away from others if you feel sick.