In Niger, fewer kids die when health workers administer azithromycin routinely, perhaps because of a shift in the composition of gut microbes.

Research in mice and humans is beginning to establish a link between the composition of microbes in the gut and immune responses to tumor cells, but the mechanisms are not yet clear.

A membrane pump found in most bacteria helps E. coli acquire drug resistance from neighboring cells even while they’re exposed to antibiotics, a new study shows.

Delivery guidelines should be updated to reflect these results, the authors write.

Governor Phil Murphy signs a bill honoring the bacterium discovered in his state’s soil, now known for its antibiotic compounds used to treat tuberculosis.

The former Columbia University professor’s early work helped illuminate the structure of penicillin, allowing chemists to make variants and broaden the scope of antibiotic treatments.

A report also concludes that an investment of $2 per person per year could forestall that fate.

A photograph of microbes producing the antibiotic actinorhodin is one of many images on display at the Oxford University Museum of Natural History this winter.

Experiments in mice and people find that probiotic supplements don’t consistently change the composition of the gut microbiome, and may have adverse effects after antibiotics.