Geographical occurence of agents of lymphatic
filariasis:
- Wuchereria bancrofti is encountered in tropical areas worldwide
- Brugia malayi is limited to Asia
- Brugia timori is restricted to some islands of Indonesia
Geographical occurence of other agents causing filariasis:
- Onchocerca volvulus (river blindness) occurs mainly in Africa, with additional
foci in Latin America and the Middle East
- Loa loa and Mansonella streptocerca are found in Africa
- Mansonella perstans occurs in both Africa and South America
- Mansonella ozzardi occurs only in the American continent
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