The Brief

The U.S. Food and Drug Administration will no longer approve annual COVID-19 vaccines for healthy younger adults and children unless drugmakers do lengthy new studies.

It's a stark break from the previous federal policy recommending an annual COVID shot for all Americans six months and older. It also raises questions about whether some people who want a vaccine this fall will be able to get one.

COVID-19 vaccine changes

What we know:

The Trump administration will limit approval for seasonal COVID-19 shots to seniors and others at high risk pending more data on everyone else. They’ll continue to use a streamlined approach for adults 65 and older and younger adults with at least one high-risk health issue.

A pharmacy advertises the COVID-19 vaccine as the nation marks the f

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