By Christine Hsu | Dec 08, 2012 02:49 PM EST
Researchers have for the first time discovered how the clever "cat parasite," previously found to alter behavior and increase the risk of self-harm and suicide in infected humans, enters the brain to influence its host.
By Makini Brice | Dec 06, 2012 02:44 PM EST
Parasites can highjack hosts' nervous systems, making them into walking zombies.
By Nikki Tucker | Oct 03, 2012 05:33 PM EDT
Lice are a common parasite that affects several children each year. Classrooms are the most common place children are infected with lice.
By Christine Hsu | Sep 06, 2012 05:00 PM EDT
Contact lens wearers beware: scientists have warned that people who don't clean that lenses properly are at the mercy of a tap water-dwelling bug that can gnaw through eyeballs and cause blindness.