COVID-19 (coronavirus disease 2019) is a disease caused by a virus named SARS-CoV-2, discovered in late December 2019.
- The virus that causes COVID-19 can affect people in different ways.
- People with COVID-19 have had a wide range of symptoms reported – ranging from mild or no symptoms to severe illness.
- Symptoms of COVID-19 may appear 2-14 days after exposure to the virus.
- Some people including those with minor or no symptoms may suffer from post-COVID conditions or “long COVID”.
- COVID-19 spreads when an infected person breathes out droplets and very small particles that contain the virus. These droplets and particles can be breathed in by other people or land on their eyes, noses, or mouth. In some circumstances, they may contaminate surfaces they touch.
- Older adults and people who have certain underlying medical conditions are at increased risk of severe illness from COVID-19.
- Vaccines against COVID-19 are safe and effective. Vaccines teach our immune system to fight the virus that causes COVID-19.