<unk>  affects people of all ethnic backgrounds; its frequency worldwide is estimated to be approximately one in 17,000. Prevalence of the different forms of<unk>  varies considerably by population, and is highest overall in people of sub-Saharan African descent. Today, the prevalence of<unk>  in sub-Saharan Africa is around 1 in 5,000, while in Europe and the US it's around 1 in 20,000 of the European derived population. Rates as high as 1 in 1,000 have been reported for some populations in Zimbabwe and other parts of Southern Africa. Certain ethnic groups and populations in isolated areas exhibit heightened susceptibility to<unk> , presumably due to genetic factors. These include notably the Native American Kuna, Zuni and Hopi nations (respectively of Panama, New Mexico and Arizona); Japan, in which one particular form of<unk>  is unusually common ; and Ukerewe Island, the population of which shows a very high incidence of<unk> .
Albinism in humans
Photosensitivity in humans
Albinism in popular culture
Coenurosis in humans
Rabies in animals
Aluminium toxicity in people on dialysis
Ciguatera fish poisoning
Cholestasis facies