How Many Covid-19 Booster Shots Will Be Needed?

Axios: The new COVID war: Redefining vaccinated 

As health officials push COVID booster shots, a debate is quickly emerging around whether the definition of "fully vaccinated" should be changed to include an additional dose of the vaccine.  

Why it matters: Booster shots provide remarkably strong protection against coronavirus infections, at least for a period of time. But getting the majority of Americans to stick out their arm again would be extremely challenging.  

Driving the news: Two governors said this week that they don't consider people who haven't received a booster shot to be fully vaccinated.  

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WNU Editor: There is already talk within the CDC of a fourth booster shot .... Will you need to get a 4th booster shot for the COVID-19 vaccine? (CBS).

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