The US government has developed a Variant Classification scheme that defines three classes of SARS-CoV-2 variants: Multiple variants of SARS-CoV-2 (the virus that causes COVID-19) have been documented in the US and globally. Viruses constantly mutate, and public health experts expect new variants of a virus to occur. The emergence of new variants further emphasizes the importance of vaccination, boosters, and other prevention efforts needed to protect against COVID-19. View additional guidance from CDC Back to Topĭata show that all of the COVID-19 vaccines currently approved or authorized in the US are highly effective in reducing risk of severe disease, hospitalization, and death. In addition, adults age 18–49 years who are not immunocompromised and who received the J&J/Janssen vaccine as both their primary and booster dose may receive a second booster dose using an mRNA COVID-19 vaccine at least 4 months after the first J&J/Janssen booster dose. Moderately or severely immunocompromised individuals age 12 years and older should receive a second booster dose of an mRNA COVID-19 vaccine at least 4 months after the first booster dose.Adults age 50 years and older should receive a second booster dose of an mRNA COVID-19 vaccine at least 4 months after the first booster dose.The Novavax COVID-19 vaccine is not authorized for booster doses.Ī second booster dose may be given to adults age 50 years and older and certain individuals who have undergone solid organ transplants or who have other conditions that weaken their immune systems: If you received the Pfizer-BioNTech vaccine (and you are age 5 years or older), you should get a booster at least 5 months after getting your second vaccine dose. If you received the Moderna (mRNA) vaccine (and you are age 18 years or older), you should get a booster at least 5 months after getting your second vaccine dose. If you received the J&J/Janssen vaccine (and you are age 18 years or older), you should get a booster at least 2 months after your vaccine. Is it safe to take a pain reliever when getting a COVID-19 vaccine?īooster doses are recommended for all COVID-19 vaccine recipients age 5 years and older: Is it safe to take an antibiotic before or after receiving a COVID-19 vaccine? Interaction with Antibiotics and Other Drugsĭo COVID-19 vaccines interfere with other drugs and medications? Who should not receive COVID-19 vaccines? What is the purpose of my COVID-19 vaccination card, and what should I do if I lose it? Should I delay my COVID-19 vaccine if I am scheduled for surgery? What can be done to relieve side effects of COVID-19 vaccines? What side effects might people have from the vaccines? Should I be concerned about Guillain Barré syndrome (GBS) after COVID-19 vaccination?Ĭan COVID-19 vaccines be given at the same time as other recommended vaccines?Īfter I have been vaccinated, do I still need to wear a mask and take other precautions? Should I be worried about myocarditis or pericarditis following COVID-19 vaccination? Is it possible to get COVID-19 after receiving the vaccine?Īre COVID-19 vaccines safe for people with allergies?Īre COVID-19 vaccines safe for people with liver disease, heart disease, or other chronic health conditions? Is it safe to get a COVID-19 vaccine while pregnant or breastfeeding? Do COVID-19 vaccines affect fertility? How do we know that the vaccines are safe? Will COVID-19 vaccines work against new COVID-19 variants? Who should receive a COVID-19 vaccine booster? What is an mRNA vaccine? Do mRNA vaccines affect DNA? Which COVID-19 vaccines are available in the US? If I already had COVID-19, do I still need to get vaccinated? Who should be vaccinated against COVID-19?
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