A brain-invading worm spread by rats and snails is making inroads into the United States. A study this week seems to show the ...

Scientists have found over a dozen parasitic worms in the eyes of a black bear, renewing fears that humans could face an emerging danger from the tiny worms that can cause blindness. The black bear ...

Every night while you sleep, microscopic eight-legged parasites called Demodex mites emerge from your pores and crawl on your face. Nearly all adults host these mites, which feed on skin oils and ...