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What is immune imprinting, and should the public be worried about it?

Biology/Immunity Infectious Diseases Vaccines

Q: What is immune imprinting, and should the public be worried about it? A: Don’t let statements about imprinting stop you from getting your annual vaccines for COVID and flu. Immune imprinting refers to the fact that our immune response to a vaccine (or infection) is affected by previous exposures to similar vaccines (or infections). Read more…

Five Breakthrough Vaccines in Development


*World Immunization Week was 24-30 April, 2024 In recognition of World Immunization Week 2024, we’re highlighting five breakthrough vaccines in development that could transform the fight against some of the world’s deadliest diseases. The rapid development of COVID-19 vaccines has shown the incredible power of immunization, saving millions of lives. Today, vaccines prevent over 20 Read more…

We should get ahead of vaccine hesitancy before new vaccines come out.

Uncertainty and Misinformation Vaccines

Recent headlines have been filled with news about the H5N1 “avian flu” outbreak in birds and cattle. The situation is quickly evolving, requiring public health officials and communicators to stay up to date and provide rapid and regular updates. Concerns about our country’s readiness to deal with another pandemic are growing, including insufficient data collection Read more…

Who is eligible for the shingles vaccine?


Everyone ages 50+ and 19+ with a weakened immune system is eligible for the Shingrix vaccine, including people who previously received the one-dose shingles vaccine, Zostavax. Shingrix is a two-dose vaccine that reduces the risk of shingles by more than 90%. Who should get Shingrix? People ages 50+ should get two doses of Shingrix. People Read more…

Are the updated COVID vaccines preventing severe disease?

Infectious Diseases Vaccines

Yes. The updated COVID vaccines are showing strong protection against severe disease in the real-world. Several new studies have estimated the effectiveness of the updated (XBB.1.5- targeted) COVID vaccines that rolled out this past fall. In the Netherlands, researchers linked data on hospital admissions to vaccine registry data for people who were at least 60. Their fall Read more…

I never had chickenpox as a child. Do I need the shingles vaccine?

Infectious Diseases Vaccines

Yes, even if you believe that you never had chickenpox as a kid, you should still get the shingles vaccine. CDC’s recommendation for shingles vaccine is specific about this. The shingles vaccine (Shingrix) is recommended for everyone over age 50 and certain younger people—whether or not they report any history of herpes zoster infection (chickenpox). Read more…