With so many probiotics to choose from, how do you know which one to buy? We asked experts for their advice on what to look ...

Researchers have revealed how Staphylococcus aureus bacteria extract iron from hemoglobin—a process crucial to their survival ...

Vatican authorities said Monday that Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment. Here's what to know.

Summer days spent swimming in lakes are a cherished pastime for many of us. But for one 77-year-old man, a refreshing dip during his Iowa vacation led to an unexpected medical mystery.

The Vatican says Pope Francis has developed bilateral pneumonia, after new tests showed a further complication in the condition of the 88-year-old pope ...

Vatican spokesman Matteo Bruni said the results of tests conducted in recent days and Monday indicate the pope is suffering ...

There was a before and after after the discovery of penicillin in 1928. This antibiotic, used to treat infections, turned ...

Most mutations that decreased antibiotic susceptibility were related to specific metabolic pathways. A MIC-increase to ...

Hundreds of different species of microbes live in your gut. In the future, one of these might serve a new function: ...

In a study of 12 heterosexual couples, researchers noted the presence of a partner's genital bacteria after sex, even when ...