Horsehair worms can grow up to a foot long and manipulate host insects — and sometimes show up in toilets — but are harmless ...

Discover what happens when a dog eats cat poop and litter, including potential health risks and expert advice for pet owners.

The USDA has halted cattle imports and closed the border to fend off the screwworm parasite—potentially affecting future beef prices.

Parasites are known to infect human cells through a variety of ingenious mechanisms. Many of them have even evolved sophisticated strategies to evade a host’s immune system by avoiding it entirely.

In Shaw, Miss., officials have failed to prevent the sewer system from backing up after heavy rains, causing water ...

Researchers have identified a type of chemical compound that, when applied to insecticide-treated bed nets, appears to kill ...

With temperatures warming up in Michigan, residents might want to take a swim, but that could leave you itching.

Infection-causing fungi responsible for millions of deaths a year will spread significantly to new regions as the planet ...

The USDA has halted cattle imports and closed the border to fend off the screwworm parasite—potentially affecting future beef ...

Post-mortem pathology results have ruled out public speculation of a vehicle strike as the cause of a bear’s deterioration ...

The most common way people swimming inland get sick is by swallowing the water. How much you consume matters: “If you swallow ...