Diseases, Conditions, Syndromes

Why older adults must go to the front of the vaccine line

Vaccinating older adults for COVID-19 first will save substantially more U.S. lives than prioritizing other age groups, and the slower the vaccine rollout and more widespread the virus, the more critical it is to bring them ...

Diseases, Conditions, Syndromes

Some COVID-19 mutations may dampen vaccine effectiveness

Scientists are reporting troubling signs that some recent mutations of the virus that causes COVID-19 may modestly curb the effectiveness of two current vaccines, although they stress that the shots still protect against ...

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