To track schistosomiasis, researchers used to count snails—home to the worms that cause the disease. Drones might offer a better way.

Reworking molecules originally designed to fight the skin disease psoriasis could pave the way for a new drug to combat malaria.

California sea otters are a threatened species, and one of the things that kills them comes from cats on land.

‘Coprolites’ from the Must Farm archaeological excavation in East Anglia shows the prehistoric inhabitants were infected by parasitic worms that can be spread by eating raw fish, frogs and shellfish.

The parasitic plant dodder has stolen a lot of genes from its victims. It uses those genes to feed off its hosts more effectively.

Mosquitoes are pretty good at killing off the parasite that causes malaria. Now scientists know more about how they do it.

"We now have a way to cultivate it, propagate it, modify its genes, and start figuring out how it causes disease in children."

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

A mosquito native to Missouri has fewer parasites when it shares its watery home with an intruder, research finds.

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