In December 2019, health experts became aware of a fast- spreasding virus in Wuhan, China.
The new coronavirus may have started in a market that sold wild animals. It has spread to six continents causing more than 3,000 deaths.
The disease has been named COVID-19.
A coronavirus belongs to a large family of viruses.
It enters the body through the nose or mouth and passes into the lungs, causing illness.
In humans, coronaviruses are usually spread by drops of fluid put into the air from an infected person.