Schistosomiasis Morbidity Hotspots: Roles of the Human Host, the Parasite and Their Interface in the Development of Severe Morbidity

Mawa, P.; Kincaid-Smith, J.; Tukahebwa, E. et al Frontiers in Immunology (2021) CC
Species of the genus Schistosoma are digenetic trematodes and the causative agents of the Neglected Tropical Disease (NTD) schistosomiasis; a parasitic disease that ranks second only to malaria in terms of socioeconomic impacts. Over 220 million people worldwide are currently infected, 90% of whom live in sub-Saharan Africa (SSA), with an estimated annual mortality of at least 200,000. Infection in humans, as well as alternative mammalian definitive hosts, occurs in contaminated freshwater environments via cercariae shed from specific snail intermediate hosts. Early acute morbidity can occur following cutaneous penetration, sometimes leading to an urticarial rash known as swimmers itch or cercarial dermatitis.