Leishmania donovani




Дата канвертавання22.04.2016
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Leishmania donovani
Leishmania donovani is a protozoa parasite that causes Leishmaniasis. The protozoa are vectored by sand flies in the genus Phlebotomus. Domestic dogs can act as a reservoir species for these protozoa. There are several Leishmania species that cause various forms of leishmaniasis. The most common form is cutaneous leishmaniasis, which causes 1-200 open sores on the body which heal on their own after a few months, leaving a scar. This form is common in Asia and in the Middle East, and exposure to the protozoa once confers immunity for the rest of your life. Parents often expose their children’s backsides to sand fly bites to gain resistance and encourage the scarring in a seldom seen place on the body. The most serious form is visceral leishmaniasis, also called Kala-azar, which causes fever, swelling of the liver and spleen and anemia. This form is always fatal if untreated and is found in Asia, Africa, and South America. Leishmaniasis can be treated with drugs if diagnosed early on, but the treatment is long and expensive.




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