Created by Sophie Terp
Parasites and Pestilence: Infectious Public Health Challenges
Human Biology
Stanford University




Loa loa

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Loiasis is caused by Loa loa, commonly known as the African eye worm. Loa loa is a species of filariae, a member of the Nematoda (roundworm) class of the phylum Aschelminthes. Loiasis is endemic to the rainforests of central and western Africa where mango flies of the Chrysops species serve as both intermediate host and parasite vector. About 13 million people are currently infected.

The picture of a Loa loa worm migrating across the conjunctiva is from Diagnostic Medical Parasitology by Lynne Shore Garcia.

Created: May 1, 2001