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 ...

Parasitic nematodes (commonly known as roundworms) are a large, diverse and poorly studied group of disease-causing organisms that severely impact the health of humans and animals. They infect almost ...

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 ...

Federal health officials reported on Monday that cases of a flesh-eating parasitic infection continue to be detected near the United States. The U.S. Department of Agriculture (USDA) said a New World ...

There are more parasites than any other organism on Earth—which is one of the reasons Emmitt Jolly finds the common but misunderstood creatures so fascinating. “That is the most successful form of ...