ABOUT THE DELTA VARIANT

Vaccines continue to reduce a person’s risk of contracting the virus that cause COVID-19, including this variant. Vaccines are highly effective against severe illness, but the Delta variant causes more infections and spreads faster than earlier forms of the virus that causes COVID-19. Learn more about variants in the US.

Infections happen in only a small proportion of people who are fully vaccinated, even with the Delta variant. However, preliminary evidence suggests that fully vaccinated people who do become infected with the Delta variant can spread the virus to others. To reduce their risk of becoming infected with the Delta variant and potentially spreading it to others: CDC recommends that fully vaccinated people:

  • Wear a mask in public indoor settings if they are in an area of substantial or high transmission.
    • Fully vaccinated people might choose to mask regardless of the level of transmission, particularly if they or someone in their household is immunocompromised or at increased risk for severe disease, or if someone in their household is unvaccinated. People who are at increased risk for severe disease include older adults and those who have certain medical conditions, such as diabetes, overweight or obesity, and heart conditions.
  • Get tested if experiencing COVID-19 symptoms.
  • If you came into close contact with someone with COVID-19 get tested 3-5 days after the date of your exposure and wear a mask in public indoor settings for 14 days after exposure or until a negative test result.
  • Isolate if they have tested positive for COVID-19 in the prior 10 days or are experiencing COVID-19 symptoms.
  • Follow any applicable federal, state, local, tribal, or territorial laws, rules, and regulations.
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