Cover Picture: This picture is a close-up of a nasty mosquito sitting on a person's hand, drinking blood from pierced skin. This is a way of spreading harmful parasites. Tungiasis is an ectoparasitosis caused by the female sand flea Tunga penetrans that causes erythema, itching, pain, and deformation of digits. Bacterial superinfection occurs in almost all patients. The disease is endemic in marginalized urban and rural communities in sub-Saharan Africa, South America, and several Caribbean islands.
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