This new virus and disease were unknown before the outbreak began in Wuhan, China, in December 2019.

The time between getting a virus and showing the first symptoms.

A feeling of illness or physical change, e.g. sore throat, headache, cough

An outbreak of a disease that spreads quickly and affects many individuals at the same time.

To cover, reach, or have an effect on a wider or increasing area.

A situation in which people are not allowed to enter or leave a building or area freely because of an emergency

To stay away from someone or something.

The use of drug to cure a person of an illness.

To stop something from happening or of stopping someone from doing something.

What's the full definition of COVID-19?

To separate and restrict the movement of people who were exposed to a contagious disease to see if they become sick.

To restrict when and where people can gather to stop or slow the spread of infectious diseases. Includes limiting large groups of people coming together, closing buildings and canceling events