Improper use of antibiotics makes it easier for drug-resistant strains of bacteria to arise. But as even drug-sensitive bacteria find loopholes, the problem might be even more dire than once thought.

Formidable sexual promiscuity. That’s not the teaser for a pornographic video but a serious health threat that humans face. It’s the term microbiologists use to describe bacterial sex, the ancient ...

There is a debate about whether antibiotics influence the rate at which bacteria acquire drug resistance, with some researchers showing that exposure to antibiotics increases the spread of antibiotic ...