Page 27 - ஹார்வர்ட் சான் பள்ளி ஆஃப் பொது ஆரோக்கியம் News Today : Breaking News, Live Updates & Top Stories | Vimarsana
CDC To Update Outdoor Mask Guidelines For Vaccinated Americans
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South Florida ready for updated outdoor mask guidelines - South Florida Sun-Sentinel
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Elusive herd immunity likely won t stop COVID-19 in the US but vaccines can control it, experts say Elizabeth Weise, USA TODAY
For almost a year, Americans have been looking forward to herd immunity, when enough people are protected through vaccination or past infection to stop the spread of COVID-19.
Once there, public officials have said, masks won t be necessary and hugging and handshakes – not to mention gyms, bars and indoor dining – can return.
But even as more than half of Americans have received at least one dose of vaccine and many others are protected by recent infections, public officials are moving away from the idea of reaching some magic number.
After initially aiming for the kind of protection provided by the measles vaccine, officials are now focused on containment similar to the flu: acknowledging there will be regular outbreaks but hoping to limit them as much as possible.
Americans can go through their entire lives without worrying about getting the measles because of a long-lasting effective vaccine given to more than 90% of children. Although small pockets of infection occur when vaccination rates drop, even people who can t get the vaccine or are immunocompromised remain mostly protected.
With COVID-19, where vaccines are effective but won t last a lifetime, vaccine hesitancy makes that kind of widespread protection unlikely, experts say.
Herd immunity in US likely impossible, but vaccines can control COVID
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