hosts; American mammals: racoons, rabbits, and possibly bobcats and mink

transmission: mosquito bite. Brugia species rarely cause zoonotic infections in humans.

life cycle: In humans, the worm matures to an adult but dies without reproducing. Humans are dead-end hosts for American Brugia species. No circulating microfilarae have been found in humans.

clinical findings: single painless nodule with no systemic signs or symptoms

histopathology: nematode(s) located in the deep dermis surrounded by a granulomatous inflammation with abundant eosinophils. The worm has a maximal diameter of 45 micrometers and has a thin cuticle.

treatment: surgical excision