Some people are trying to treat autoimmune problems with an unlikely tool: worms that live in your gut, permanently. Scientists are finally starting to figure out whether they work.
Health experts used to say elimination of river blindness, caused by worms, was impossible. Now they've set a target date: 2025. Why the turn in this worm war?
Puerto Rico has more reported cases of Zika than many other places in the region, and the number of cases continues to rise. Unfortunately, Zika is just one of the island's many problems.
Health officials thought they were close to wiping out the parasite. It's been President Carter's dream for decades. But the dogs of Chad have turned out to be a major problem.
Scientist Peter Hotez has spent nearly 40 years trying to treat and eliminate the diseases that worms can cause. And he won't let the "ick" factor stop him.