TABLE 1.

Parasitic NTDs and worldwide case numbers^a

Condition	Organism(s)	No. of cases worldwide
Protozoa
Human African trypanosomiasis (HAT)	Trypanosoma brucei	<1,000
Chagas disease	Trypanosoma cruzi	6–7 M
Cutaneous leishmaniasis	Leishmania tropica, Leishmania mexicana, Leishmania major	30,000
Mucocutaneous leishmaniasis	Leishmania braziliensis
Visceral leishmaniasis	Leishmania donovani
Filariasis	Wuchereria bancrofti, Brugia malayi, Brugia timori, Loa loa	120 M
Helminths
Soil-transmitted helminthiasis (STH)	Ancylostoma duodenale, Necator americanus, Ascaris lumbrcoides, Trichuris trichiura, Strongyloides stercoralis	1.5 B
Onchocerciasis	Onchocerca volvulus	20.9 M
Drancunculiasis	Dracunculis medinensis	54
Echinococcosis	Echinococcus granulosus, Echinococcus multilocularis	1 M
Taeniasis/cysticercosis	Taenia solium	2.79 M
Fascioliasis	Fasciola hepatica, F. gigantica	10,635
Schistosomiasis	Schistosoma japonicum, Schistosoma mansoni, Schistosoma aematobium	240 M
Arthropods
Scabies	Sarcoptes scabiei	200 M

^aWorldwide cases based on information from the WHO (332–334) and from the Global Burden of Disease Study 2016 (335) and other sources (336, 337). M, million; B, billion.