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Leishmaniases of Algeria and Morocco - vectors and reservoir hosts
Hanušniaková, Ida ; Dvořák, Vít (advisor) ; Kočišová, Alica (referee)
Leishmaniasis is one of the major neglected tropical diseases, which occurs in both the Old and New Worlds, affecting hundreds of thousands of people annually. In the Old World, human-infecting leishmanias are transmitted by sand flies of the genus Phlebotomus, whereas in the New World by species of the genus Lutzomyia. The disease has three main clinical manifestations, namely cutaneous, mucocutaneous, and visceral leishmaniasis. Algeria is year after year ranked second in the number of cases of cutaneous leishmaniasis. In Morocco, the number of cases per year is lower, however, leishmaniasis is there also a common disease. Understanding the transmission cycles in the foci of the infection may lead to better prevention of the disease. In Morocco and Algeria, these Leishmania species occur: Leishmania major which causes zoonotic cutaneous leishmaniasis and is transmitted by Phlebotomus papatasi, L. tropica, causative agent of anthroponotic cutaneous leishmaniasis transmitted by P. sergenti and L. infantum which causes zoonotic visceral leishmaniasis and is transmitted by several of the subgenus Larroussius, for instance P. perniciosus or P. perfiliewi. Reservoir organisms include rodents, dogs and humans. In the past, the species identification of sand flies depended on morphological keys. At...
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Leishmaniases of northern Africa and their vectors
Hanušniaková, Ida ; Dvořák, Vít (advisor) ; Sádlová, Jovana (referee)
Leishmaniasis belongs to the most important world human as well as animal diseases. It occurs in almost all continents. Its nearest area of occurrence from our point of view is the Mediterranean, including the states of North Africa. A significant portion of all registered cases occurs here and the prevalence has been increasing in last decades. Algeria is the second in the world in number of cases of cutaneous leishmaniasis and in the other countries the situation is quite similar. Two major forms of the disease occur in the region: visceral and cutaneous leishmaniasis. Leishmania major is the most abundant species in the are, followed by L. infantum and L. tropica. In the Old World, leishmanises are transmitted by sand flies of the genus Phlebotomus. The most important proven vectors are Phlebotomus papatasi, P. sergenti, P. perfiliewi or P. perniciosus. Rodents are considered to be main reservoir organisms (Psammomys obesus, Meriones shawi), together with dogs in which canine leishmaniasis may occur with clinical symptoms; at the same time they serve as reservoirs of the disease. This bachelor thesis summarizes occurrence of individual Leishmania species, clinical symptoms they cause in the hosts and their vectors in North Africa. Key words: leishmaniasis, phlebotomus, North Africa, Leishmania,...
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