A preliminary study shows that the J&J vaccine doesn't seem to produce as many antibodies in recipients as the mRNA options.
The benefits still overwhelmingly outweigh the risks, experts stress.
The European Union is reviewing a case of a deadly blood clot.
Here's what you need to know this week.
The vaccine will come with a warning about a minor risk of blood clots, but officials determined the shot was safe to continue.
Errors happen in drug making. But quality testing helps prevent them from reaching the public.
Here’s everything you need to know this week.
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