What You Need to Know About VariantsWhat You Need to Know
New variants of the virus are expected to occur.
Slowing the spread of the virus, by protecting yourself and others, can help slow the emergence of new variants.
The Omicron variant causes more infections and spreads faster than the original SARS-CoV-2 strain of the virus that causes COVID-19.
CDC is working with state and local public health officials to monitor the spread of all variants, including Omicron.
Getting a vaccine reduces your risk of severe illness, hospitalization, and death from COVID-19. Staying up to date on your COVID-19 vaccines, which includes getting a booster when eligible, further improves your protection.