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Why does the flu vaccine have to be updated every year?

Infectious Diseases Vaccines

Three reasons: 1. Influenza viruses mutate over time, 2. the virus strains circulating can vary year to year, and 3. our immunity wanes over time. That’s why the flu vaccine formula needs to be updated yearly, and we need to get a flu shot each season to be well-protected. Influenza viruses have proteins on their surface: hemagglutinin (HA) and neuraminidase (NA). Read more…

Nerdy Girls Live 11/17/23

Vaccines Videos

Those Nerdy Girls answer your questions about fall vaccines for COVID-19, flu, and RSV. Hosted by: – Ashley Ritter, APRN, PhD: TNG Founding Member & Contributing Writer – Chana Davis, PhD: TNG Contributing Writer & Founder of Fueled by Science ➡️ Welcome and Intros (0:00-0:59) ➡️ Who needs an RSV vaccine and why? What is Read more…

How long do flu shots last?

Infectious Diseases Vaccines

In general, you can count on 6 months of meaningful protection starting two weeks after you get your annual flu vaccine. Protection may wane earlier in older adults. Getting vaccinated in advance of flu season’s start ensures that you have good coverage when the season begins, and in most adults, your protection will stick around Read more…

Does the Novavax COVID-19 cause fewer side effects?

Vaccines

The Novavax COVID-19 vaccine (Nuvaxovid) causes slightly fewer side effects on average, but the difference is modest at best. People who get the Novavax shot are somewhat less likely to report symptoms at the injection site (e.g. soreness) or throughout the body (e.g. fatigue). Mild to moderate side effects are still very common with Novavax. Read more…