Why do some people get sick with flaviviral infections like dengue fever while others don't? New research offers an explanation.

Bone infections after surgery can be hard to treat and delay healing. A new hydrogel attacks bacteria and encourages regrowth with a single application.

Evidence of a true sexual reproduction cycle in Leishmania parasites could enable better prevention of infectious disease.

The parasite Entamoeba histolytica causes severe gut disease in humans. It "quite literally takes bites out of other cells."

A key protein is vital to the infectious bacterium C. Difficile's production of dangerous toxins, researchers say.

Exposing MRSA to blue light renders it defenseless against antiseptics as mild as hydrogen peroxide.

Bacteria live in hot springs around the world, but how'd they get there? New evidence supports the "air bridge" hypothesis.

Research with roundworms shows a direct link between a diet lacking B12 and an increased risk of infection from two deadly pathogens.

A new coating could keep intravascular catheters from becoming a haven for harmful bacteria.

Despite FDA warnings, many patients leave hospitals with prescriptions for powerful but dangerous antibiotics.