Transmission
Gnathostomiasis is transmitted by the ingestion of raw, insufficiently cooked definitive hosts such as fresh water fish, poultry, or frogs.
In Thailand and Vietnam, the most important cause appears to be consumption of undercooked Asian swamp eels (Monopterus albus, also called Fluta alba) which transmit G. spinigerum. Monopterus albus is an invasive species in North America, but no Gnathostoma has yet been identified in the US.
Read more about this topic: Gnathostomiasis