CDC says "pivotal discovery" about Delta variant prompted new mask guidance
Some 274 vaccinated people came down with symptoms of COVID-19 after an outbreak in Massachusetts, the CDC said.
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Alexander Tin is a digital reporter for CBS News based in the Washington, D.C. bureau. He covers federal public health agencies, including the response to infectious disease outbreaks like COVID-19. Previously, he was a campaign reporter for CBS News based out of Las Vegas, where he was raised. He covered presidential, Senate and House candidates for the 2020 election cycle in Arizona, California, Nevada and New Mexico. He has also worked in Washington for "Face the Nation" and in New York for the "CBS Evening News." Tin graduated from Columbia University in 2017 with a bachelor's degree in political science.
Some 274 vaccinated people came down with symptoms of COVID-19 after an outbreak in Massachusetts, the CDC said.
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The drug maker plans to expand the size of its trial to look for "rarer events" of side effects.
As early as this fall, U.S. regulators could decide whether some people should get booster shots.
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The U.S. is currently averaging less than 300,000 first doses daily, according to figures published by the CDC.
The Centers for Disease Control and Prevention said this would be its "final extension."
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Reported cases represent just a tiny fraction of the nearly 130 million Americans who have been fully vaccinated with either Pfizer or Moderna's doses.
They'll be distributed this year and next and will be given to 92 nations.
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Most Americans will not be able to get a "vaccine passport" soon.
Many adolescents could get their first doses within the coming days.