Free Republic

Health officials have confirmed 12 cases of rat lungworm disease in the continental United States since January 2011 — including six patients who had not traveled abroad but still contracted the illness caused by a parasite endemic to tropical regions in Asia and Hawaii. [...snip...] The disease is also known as angiostrongyliasis, after the parasitic roundworm Angiostrongylus cantonensis whose larvae hatch in the lungs of rats and then are expelled in the rodents’ excrement. At that point, the larvae can be picked up by snails and slugs, and then passed along to humans if the snails and slugs are eaten...

LOS ANGELES - A disease that can cause neurological illness and meningitis in people, rat lungworm, has been found in wild opposums, rats and a zoo animal in San Diego County, indicating its establishment in California for the first time. Researchers reported their findings in the journal Emerging Infectious Diseases, published by the U.S. Centers for Disease Control and Prevention.