All indications now are that the Provincetown outbreak investigation is among the pieces of new evidence behind the CDC's decision to ask Americans to once again put on their masks indoors, even if they are vaccinated. Read more:
As of Thursday, 882 people were tied to the Provincetown outbreak. Among those living in Massachusetts, 74% of them were fully immunized, yet officials said the vast majority were also reporting symptoms. Seven people were reported hospitalized.
The idea that vaccines halt transmission of the virus was largely behind the CDC's decision in May suggesting vaccinated people could safely go without their masks indoors and in crowds, even if others were unvaccinated.But that assumption had been based on studies of earlier versions of the virus. Delta was known for its"hyper-transmissibility," or as one former White House adviser put it"COVID on steroids.
All indications now are that the Provincetown outbreak investigation is among the pieces of new evidence behind the CDC's decision to ask Americans to once again put on their masks indoors, even if they are vaccinated. But Walensky hinted that the biggest driver was new unpublished research on a person's"viral load" -- the amount of virus in a person's nasal passages -- being considerably high even after being vaccinated with a U.S.-approved vaccine.
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