First report of Leishmania tropica from a classical focus of L. major in North-Sinai, Egypt.
Cutaneous leishmaniasis (CL) is prevalent in the Egyptian Sinai Peninsula and previous research has consistently documented the etiologic agent to be Leishmania major. We report the first isolation of Leishmania tropica from human cases of CL in a Northern Sinai community bordering Palestine. Parasite culturing, real-time polymerase chain reaction (PCR), gene sequencing, and restriction fragment length polymorphism (RFLP) analyses indicate CL cases in this community were caused by either L. major or L. tropica (three cases each). Two wild-caught rodents (Gerbillus pyramidum floweri) were infected with L. tropica. Phlebotomus papatasi sand flies were found harboring L. major, however only non-infected individuals of Phlebotomus sergenti, a vector for L. tropica, were caught. Patients with L. tropica had not traveled from the region in over a year, suggesting these cases are autochthonous. This scenario is consistent with an incursion of L. tropica from bordering countries and raises concerns about expansion of this parasite further into Egypt.
Shehata
Magdi G
MG
Entomology Department, Faculty of Science, Ain Shams University, Cairo, Egypt. mgdshehata@yahoo.com
Samy
Abdallah M
AM
Doha
Said A
SA
Fahmy
Adel R
AR
Kaldas
Rania M
RM
Furman
Barry D
BD
Villinski
Jeffrey T
JT
D000293:Adolescent; D000328:Adult; D000818:Animals; D002648:Child; D002675:Child, Preschool; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D004534:Egypt / Q000453:epidemiology; D005260:Female; D005849:Gerbillinae / Q000469:parasitology; D006801:Humans; D007303:Insect Vectors / Q000469:parasitology; D018320:Leishmania major / Q000235:genetics / Q000302:isolation & purification; D007895:Leishmania tropica / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D016773:Leishmaniasis, Cutaneous / Q000453:epidemiology* / Q000469:parasitology; D008297:Male; D010691:Phlebotomus / Q000469:parasitology; D010802:Phylogeny; D012150:Polymorphism, Restriction Fragment Length
D021903:DNA, Ribosomal Spacer