What sex act do you not get the appeal of?

Estimates of current numbers of human helminth (worm) infections

Source: Journal of Parasitology 85:379-403 Dr. D.W.T. Crompton (Crompton, D.W.T. [1999] How much human helminthiasis is there in the world?)

The species shown in red are considered to be the "commonest helminths or those judged to have [the] most general public health significance." Helminth species Numbers (millions) Distribution Ancylostoma duodenale and Necator americanus
1,298.00 Worldwide; developing countries Ascaris lumbricoides
1,472.00 Worldwide; developing countries Brugia malayi and Brugia timori 13.00 E. Indonesia islands; Philippines; S.E. Asia; Southern China; India. Clonorchis sinensis 7.01 China; Korea; Taiwan; Vietnam Diphyllobothrium latum
9.00 Worldwide where certain raw fish is eaten. Dracnunculus medinensis 0.08 Sub-Sahara Africa; Yemen Echinococcus granulosus and Echinococcus multilocularis 2.70 Worldwide Echinostoma spp.
0.15 Philippines; Thailand Fasciola hepatica and Fasciola gigantica
2.40 China; Egypt; Europe; Iran; South America Fasciolopsis buski
0.21 Bangladesh; Cambodia; China; India; Indonesia; Laos; Thailand; Vietnam. Heterophyes heterophyes (and related species)
0.24 Egypt; Iran; Korea Hymenolepis nana
75.00 Americas; Australia; developing countries Loa loa 13.00 West and central Sub-Saharan Africa Metagonimus yokogawai (and related species) 0.66 Korea; S.E. Asia. Onchocerca volvulus 17.66 Central and South America; Sub-Saharan Africa; Yemen Opisthorchis viverrini and Opisthorchis felineus
10.33 Kazakhastan; Laos; Thailand; Ukraine Paragonimus westermani (and related species)
20.68 China; Laos; Korea; Ecuador; Peru Schistosoma haematobium 113.88 Africa; E. Mediterranean region Schistosoma intercalatum
1.73 Sub-Saharan Africa Schistosoma japonicum
1.55 China; Western Pacific region Schistosoma mansoni 83.31 Africa; Caribbean; E. Mediterranean region Schistosoma mekongi 0.91 Cambodia; Laos Strongyloides stercoralis
70.00 Worldwide (warmer countries) Taenia saginata 77.00 Worldwide (related to beef consumption) Taenia solium
10.00 Worldwide (related to raising pigs for pork) Trichuris trichiura 1,049.00 Worldwide; developing countries Wuchereria bancrofti
107.00 Asia; Central and South America; Sub-Saharan Africa; West Pacific countries

And to respond to the rest of your comment, you wouldn't exactly be aware that you have a parasite problem.

/r/AskReddit Thread Parent