The US Food and Drug Administration (FDA) is preparing to allow “mix and match” coronavirus vaccine boosting, in which people get a different additional shot to the dose they initially received,...

The vast majority of people infected with SARS-CoV-2 clear the virus, but those with compromised immunity—such as individuals receiving immune-suppressive drugs for autoimmune diseases—can become...

Spending long periods of time in space can wreak havoc on space traveler health, including negative effects on metabolism, bone and muscle health, gastrointestinal health, immunity and mental health....