Residents, gardeners should take precautions to protect against deadly disease transmitted by snails, slugs, and animals that ingest them

By Miriam Raftery

March 7, 2026 (San Diego’s East County) – Rat lungworm (Angiostrongylus cantonensis), a brain-eating parasite, has been found for the first time in San Diego County. It can be transmitted to humans, pets and wildlife with potentially deadly results. It was found in 10 opossums taken in by wildlife rescuers across the county that were euthanized after falling ill. The locations where the opossums were found include La Mesa, the College Area, Bonita, Peñasquitos, Cardiff by the Sea, Carlsbad, Point Loma, and San Diego. In addition, rat lungworm was also found in three rats and a wallaby at the San Diego Zoo.