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zoonotic north american Brugia

Wednesday 8 December 2004

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


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