parasite

The pills for adults and school-aged kids aren't the right dose for preschoolers. Plus they taste bad. Now there's a new pill for little ones — but it seems like an uphill battle to get it to them.

South Korean actor Lee Sun-kyun, who played a rich entrepreneur in the Oscar-winning film Parasite, was found dead on Wednesday. Police suspect he died by suicide.

Leishmaniasis, a disease spread by a parasite carried by sand flies, is generally considered a tropical disease. Now, thanks to climate change, new research finds it's endemic to the United States.

Scientists caution that as the planet warms, more Americans could be exposed to disfiguring varieties of the Leishmania parasite. Overtreatment can be a problem, too, experts warn.

Claws of the louse that afflicts human scalps fit neatly around a single human hair. Louse eggs stick to hair shafts with a sort of glue. Maybe the best remedy for you and the kids? Comb, baby, comb.

Scientists have found the first eukaryotic organism that functions fine without mitochondria, the "powerhouses" that make energy for the cells of yeast, humans and other animals.

Researchers have uncovered a juicy tidbit that could be the parasite's undoing.

Maybe. A nine-year study in Bolivia found an unexpected association between the parasitic worms in a woman's guts and her fertility.

Current drugs aren't working as well. Old drugs may be making a comeback. And a poet sums up the reason that malaria fighters met this week.