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One year or 5? Doctors and drug companies increasingly disagree about when we ll need COVID-19 booster shots
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How Long Does Vaccine Protection Last, and When Will We Need Boosters?
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Updated June 2, 2021 at 6:00 AM ET
The Centers for Disease Control and Prevention has stopped tracking every case that occurs when a COVID-19 vaccine fails to protect someone. Instead, the agency is focusing on people who get very sick or die.
The decision is controversial. Critics argue the strategy could miss important information that could leave the U.S. vulnerable, including early signs of new variants that are better at outsmarting the vaccines.
The CDC and outside infectious disease experts, however, say it makes sense to prioritize efforts on those who get hospitalized or die.
“These vaccines were studied to prevent severe illness, hospitalization and deaths. And as we look at these breakthrough infections, these are the ones we’re most concerned about,” CDC Director Rochelle Walensky said at a White House COVID-19 briefing on May 18.
More than half of American adults are fully vaccinated. People are venturing out in public unmasked, hopping on planes, going on dates, and reconnecting with family and friends face to face.
But, in this new phase of the pandemic in the US, our vaccine protection is not yet iron clad. Experts are already watching for signals that could portend a surge of COVID-19 cases this fall or winter, especially in areas of the country with low vaccine coverage. We are nowhere near declaring victory, said Dr. Gregory Poland, director of the Mayo Clinic s Vaccine Research Group.
Interviews with six infectious-disease experts suggest the future of the COVID-19 crisis boils down to three big unknowns about our vaccines. First: how long does vaccine protection last? Second: will the hunt for even better vaccines be a success? And third: when will everyone have access to COVID-19 vaccines?
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