Again, humans are not a normal host, but infestations do occur on occasion, often in the eye or nose. The maggots usually do not survive beyond the first larval instar. Cutaneous myiasis in humans can be caused by Wohlfartia species, resulting in boil-like lesions, usually in young children. Two flies that produce painful boil-like lesions in various parts of the body are Dermatobia hominis, common in Mexico, Central and South America, and Cordylobia anthropophaga. Both have a wide range of vertebrate hosts, including humans.
Enteric myiasis is infestation of the hosts intestinal system.
True enteric myiasis does not occur in man, but does affect horses, donkeys, mules, and other animals. One well known example is the horse bot fly, Gasterophilus intestinalis. It was introduced shortly after WWI by Baer, who noticed that maggot-infested wounds did not develop infections.