Last updated: September 7, 2022

SARS-CoV-2 is the name of the virus that causes coronavirus disease 2019 (COVID-19). The disease is believed to have originally occurred from animal-to-person contact. It spreads person-to-person.

COVID-19 can be mild or severe, and it can affect anyone. However, older people with other health conditions seem to be at higher risk for severe illness and death. Our understanding of COVID-19 continues to evolve.

COVID-19 vaccines and boosters can:

  • Help you avoid getting a COVID-19 infection
  • Help prevent serious illness and hospitalization if you do get infected

Learn more about COVID-19 vaccines and boosters, including the omicron boosters.