Biology
545
HUMAN PARASITOLOGY
Introductory material
Revised: 09 September 1999
World
POPClock
| DISEASE/SPECIES |
NUMBER OF PEOPLE INFECTED WORLDWIDE |
NUMBER OF YEARLY DEATHS WORLDWIDE |
|---|---|---|
| African trypanosomes | 300,000-500,000 | perhaps 65,000 |
| Amoebic dysentery | unknown; 48 million with severe disease | 70,000 |
| Ascaris lumbricoides | 1.47 billion | perhaps 60,000 |
|
Brugia malayi Brugia timori |
13 million | unknown |
| Clonorchis sinensis | 7 million | unknown |
| Diphyllobothrium spp. | 9 million | unknown; few |
|
Echinococcus granulosus Echinococcus multilocularis |
2.7 million | unknown |
| Echinostomes | 150,000 | unknown; few |
| Fasciola hepatica; Fasciola gigantica | 2.4 million | unknown; few |
| Fasciolopsis buski | 210,000 | unknown; few |
| Giardiasis | 350 million | unknown; few |
| Heterophyids | 900,000 | unknown; few |
| Hookworms | 1.3 billion | ca 70,000 |
| Leishmaniasis | 12 million | unknown |
| Loa loa | 13 million | unknown; few |
| Malaria | 300-500 million | 1.5-2.7 million |
| Onchocercus volvulus | 17.7 million | unknown |
|
Opisthorchis viverrini Opisthorchis felineus |
10.3 million | unknown |
| Paragonimus spp. | 20.7 million | unknown; few |
| Schistosomiasis | 201 million | perhaps 20,000 |
| Strongyloides stercoralis | 70 million | unknown |
| Taenia saginatus | 77 million | unknown; few |
| Taenia solium | 10 million | unknown |
| Trichuris trichiura | 1.05 billion | unknown; few |
| Trypanosoma cruzi | 16-18 million | unknown |
| Vampirolepis nana | 75 million | unknown; few |
| Wuchereria bancrofti | 107 million | unknown |
|
The total number of humans infected worldwide with intestinal parasites
was estimated by the WHO at
3.5 billion (out of a total world population of 5.96 billion in late
1998).
At that time, about 450 million were thought to have clinical illness
although it is likely that is an underestimation. Crompton (1999) has
estimated that over 10% of all individuals infected with helminths
experience clinical disease.
*Sources: Crompton, D.W.T. 1999. How much human helminthiasis is
there in the world? Journal of Parasitology 85(3): 397-403; The World
Health Organization; and various additional published reviews | ||
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Kansas State University | Biology Division