Parasites

A surprising number of dogs working for the U.S. Department of Homeland Security are infected with this parasite, according to a new study.

Archaeologists peek into the past by prodding preserved human poo.

Want to see a photo of a bee parasitized by dozens of beetle larvae? Wait, where are you going?

Fossil fly pupae contain evidence of a fascinating —and deadly — story of insect parasitism in the ancient world.

A striking painting called "The Host" is based on the artist's personal experience with a parasitic worm that he discovered in his eye.

A Tennessee teen's summer trip to Florida turned nightmarish after he contracted hookworms from playing in sand at the beach.

It's not the type of garnish you want on your salmon: a translucent, wriggling worm.

She may be small, but check out that stinger!

So far, Texas health officials have identified 56 illnesses due to Cyclospora since May.

Beach sand can harbor a number of bacteria, parasites and fungi that are linked with diseases.

When a woman in Russia noticed a small lump under her left eye, she snapped a selfie. Then, the lump moved.

Can you wrap your mind around the idea of an ant brain with a worm in it?

Worst. Roommates. Ever.

It's a Russian nesting doll of sorts: Parasitic bugs that live in the human gut have their own set of gut bugs inside their intestines.

An Australian teenager who ate a garden slug on a dare was infected by a parasite that caused a debilitating brain disease, leaving him paralyzed from the neck down.

At a university hospital in the Netherlands, 17 students have a tropical parasitic disease.

A strange plant that needs no sunlight and sucks on underground fungi for nutrients has turned up in Borneo, Malaysia, 151 years after the last time a scientist found it.

A tiny tick had an even tinier bloodsucking hitchhiker.

A 26-year-old woman in Oregon made a horrifying discovery: Her eyes were infected with small, translucent eye worms.