10 things you need to know today: August 12, 2021

FDA eyes 3rd vaccine dose for immunocompromised, California to require teachers be vaccinated, and more

A vaccine card
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1. FDA expected to approve 3rd vaccine dose for the immunocompromised

The Food and Drug Administration will revise its emergency use authorizations for the Pfizer and Moderna COVID-19 vaccines on Thursday, allowing immunocompromised adults to get a third dose, several news organizations report. Both the Pfizer and Moderna vaccines involve two shots, but there is evidence that people who are immunocompromised may only develop low levels of antibodies after being vaccinated, if any at all. A recent study at Johns Hopkins University of organ transplant recipients, who take medicine to suppress their immune systems, showed that a third vaccine dose increased their antibody levels. In July, an advisory panel to the Centers for Disease Control and Prevention said extra doses must be approved for immunocompromised adults, who make up about 2.7 percent of the U.S. population.

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