title: Phlebotominae spatial distribution asssociated with a focus of tegumentary leishmaniasis in Las Lomitas, Formosa, Argentina, 2002.
abstract: Las Lomitas, Formosa, Argentina, reported 96 cases of tegumentary leishmaniasis during 2002. The urban transmission was suggested although previous outbreaks were related with floods of the Bermejo river (BR) 50 km from the village. Phlebotomine collections were performed during March 2002 to define the spatial distribution of risk, together with satellite imaginery. The phlebotomine/trap obtained was 1679.5 in the southern BR shore, 1.1 in the periruban-rural environment and 2.3 in the northern Pilcomayo river marshes. Lutzomyia neivai was the prevalent species (91.1%) among the 2393 phlebotomine captured, and it was only found in the BR traps. The other species were L. migonei (7.9%), L. cortelezzii (0.9%), and Brumptomyia guimaraesi (0.1%). The satellite images analysis indicates that the fishing spots at the BR were significantly overflowed during the transmission peak, consistent with fishermen recollections. This spatial restricted flood might concentrate vectors, reservoirs, and humans in high places. Therefore, both the spatial distribution of vectors and the sensor remoting data suggests that in Las Lomitas area the higher transmission risk it is still related with the gallery forest of the BR, despite of the urban residence of the cases. The surveillance and control implications of these results are discussed.
authors.affiliation: Centro Nacional de Diagnóstico e Investigación en Endemo-epidmias, Buenos Aires, Argentina. danielsalomon@hotmail.com
authors.forename: Oscar Daniel
authors.initials: OD
authors.lastname: Salomón
authors.forename: Pablo Wenceslao
authors.initials: PW
authors.lastname: Orellano
authors.forename: Mario
authors.initials: M
authors.lastname: Lamfri
authors.forename: Marcelo
authors.initials: M
authors.lastname: Scavuzzo
authors.forename: Lucía
authors.initials: L
authors.lastname: Dri
authors.forename: María Isabel
authors.initials: MI
authors.lastname: Farace
authors.forename: Darío Ozuna
authors.initials: DO
authors.lastname: Quintana
mesh_terms: D000818:Animals; D001118:Argentina; D005260:Female; D006801:Humans; D007303:Insect Vectors / Q000145:classification*; D016773:Leishmaniasis, Cutaneous / Q000635:transmission*; D008297:Male; D011156:Population Density; D011576:Psychodidae / Q000145:classification*