Add Yahoo as a preferred source to see more of our stories on Google. A tree tunnel in the Puna district of the island of Hawaii, also known as the Big Island. (Peter Unger/Getty Images) The parasite ...

The parasite that causes rat lungworm disease, long associated with Hawaii, was detected in California at the San Diego Zoo, raising concerns that the debilitating illness could become more widespread ...

SAN DIEGO — Brain-eating worms known as "rat lungworm" have been found in San Diego County, the first time the parasitic worms have been found in any state west of Texas. According to new research ...

For 12 months, physicians treated a 64-year-old Australian woman for a lung condition of unknown origin. They administered steroids, then immunosuppressants, then monoclonal antibodies. Her symptoms ...

A parasite that may already be hiding in your brain has a shocking survival trick: it can infect the very immune cells sent to destroy it. Yet most people never get sick, and new research from UVA ...

A parasite once thought to lie dormant inside brain cysts has been found to maintain multiple active forms within a single cyst. That hidden diversity reshapes how chronic infection persists, ...

Scientists have discovered that Toxoplasma gondii, a parasite that infects up to one-third of people worldwide, is far more active and complex than previously assumed. Credit: Shutterstock A common ...

A parasite that lives permanently in the brains of millions may not be as uniformly dormant as scientists once thought. Researchers at the University of California, Riverside (UCR) have recently found ...