Entamoeba histolytica infects nearly 50 million people each year and kills around 70,000. It’s a shape-shifting parasite that invades the human gut, often causing mild symptoms like diarrhea. But in ...

Add Yahoo as a preferred source to see more of our stories on Google. In addition to eggs, tissue cysts present in the meat of warm-blooded animals can spread toxoplasmosis as well if they are not ...

Male fertility rates have been plummeting over the past half-century. An analysis from 1992 noted a steady decrease in sperm counts and quality since the 1940s. A more recent study found that male ...

A human case of the flesh-eating New World Screwworm has been found in the United States in a person who traveled to El Salvador. The parasitic insect is actually a fly that looks similar to a ...

When most travelers pack their bags for a trip, they're focused on sightseeing, food, and making memories – not the possibility of returning home with a rare illness. Unfortunately for some, ...

More than 90% of popular freshwater fish in Southern California are carrying human-infecting parasites, researchers say. This poses a significant danger for those who like to eat freshly caught ...

Head lice, fleas and tapeworms have been humanity’s companions throughout our evolutionary history. Yet, the greatest parasite of the modern age is no blood-sucking invertebrate. It is sleek, ...