CDC opens COVID-19 boosters to all adults

The U.S. Centers for Disease Control and Prevention on Friday approved COVID-19 booster shots for all adults, paving the way for millions of Americans to bump up their protection against the virus.

CDC director Rochelle Walensky signed off on the broader use after CDC advisors unanimously recommended the expansion earlier on Friday - the same day the Food and Drug Administration authorized the use of booster doses for all adults six months after they've received their second shot of either the Pfizer or Moderna vaccines.

It had previously allowed the additional shot for all recipients of Johnson & Johnson's one-dose vaccine, two months after their primary dose.

After about two months of declining infections, the U.S. has seen daily increases for the past two weeks, driven by the Delta variant, and colder weather leading people to spend more time indoors.

Most adults were already eligible for the additional shots, but according to CDC data, fewer than 18% had received one.

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