Sandfly surveillance within an emerging epidemic focus of cutaneous leishmaniasis in southern Iran

Abstract number: P1406

Yaghoobi-Ershadi M.R., Hakimiparizi M., Akhavan A.A.

Objectives: To determine the species richness and relative abundance of sandflies, their distribution, monthly prevalence, number of generations and leishmanial infection of sandflies in the study area.

Methods: The study was carried out from April to October of 2006 in Bahraman rural district of Kerman Province, south of Iran. Sandflies were collected biweekly from indoors and outdoors fixed places in the selected villages, using 30 sticky paper traps from the beginning to the end of the active season and they were mounted and identified. Some blood fed and gravid female sandflies of rodent burrows and indoors were dissected and examined microscopically for natural promastigote infection of leishmania parasite during August to September. The physiological age of each female was also determined by the presence or absence of granules in the accessory glands. All dissected sandflies were mounted and identified.

Results: In total, 2439 specimens comprising 8 species (3 Phlebotomus and 5 Segentomyia) were identified. The most common sandfly is P. papatasi and represents 87.1% of sandflies from indoors and 57.2% from outdoors. The activity of the species extended from April to end October. There are two peaks in the density curve of this species, one in June and the second in August. Natural promastigote infection was found in P. papatasi and it was calculated to be 12.7%. Examining the accessory glands of the female sandflies from rodent burrows showed that 85.45% of P. papatasi were parous and the rest were nuliparous and unknown.

Conclusions: Phlebotomus papatasi is considered as a probable vector among gerbils and to humans with a high percentage of promastigote infection in this new focus of cutaneous leishmaniasis. The Bahraman area which until recently was unknown as an endemic area seems now to represent a focus of zoonotic cutaneous leishmaniasis transmission in Iran.

Session Details

Date: 10/04/2010
Time: 00:00-00:00
Session name: Abstracts 20th European Congress of Clinical Microbiology and Infectious Diseases
Location: Vienna, Austria, 10 - 13 April 2010
Presentation type:
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