Rat lungworm, a parasite that can infect certain animals and humans and prove fatal, was found in wild opossums, rats and a wallaby at the San Diego Zoo, according to a new study published by the U.S.

The CDC describes rat lungworm as a parasite found in rats, whose larvae are shed in rat feces and then taken up by snails ...

A brain‑invading parasite better known as rat lungworm has quietly surfaced in San Diego County, turning up in wild animals ...

Researchers said the parasite is "an emerging veterinary and public health concern." ...

A neurological disease spread by rats and other animals may have become established in San Diego County.

A parasitic worm capable of infecting the human brain has established local transmission in California for the first time, ...