History remembers warriors for their conquests and kings for their reigns. But this one Viking left behind something more ...

Medically reviewed by Robert Burakoff, MDIntestinal worms often lead to gastrointestinal symptoms, like diarrhea, because ...

In the United States, the most well-known skin-penetrating parasitic worm, called a nematode ... when immature larvae excreted in the host poop develop into larvae. The infective larvae then ...