Bacteria

A simplified penicillin allergy test could help reduce false positives, but doctors face challenges in using it

A chemical trick for making oxygen can sustain whole underground ecosystems

The world’s best TB drug was too expensive for sufferers—until advocates and a YouTube star changed almost everything

A Western lifestyle seems to diminish the diversity of gut microbes

Infections of a new strain of Pseudomonas aeruginosa that have led to blindness and death highlight the worsening antibiotic resistance crisis

Uncertain funding means wastewater surveillance programs could close in the future

One in three cases of maternal sepsis can be prevented with a single dose of antibiotic, a study in low- and middle-income countries shows

Urinary tract infections are increasingly becoming resistant to first-line antibiotics, and this may be a warning for our ability to treat other microbial infections

Bacterial predators fight like wolves, torpedoes and vampires, and they could provide the next antibiotics

Widely used gowns, intended to protect people, can let too much liquid seep through, new studies suggest

A medieval cemetery yields DNA evidence of the deadly pandemic bacterium’s Central Asian ancestor

People are infected by bacteria that, after contacting heavy metals, develop drug-resistant traits