| vectors of cutaneous leishmaniasis in north-central venezuela. | an entomological survey was undertaken from january 1991 to february 1992 in el ingenio, miranda state, venezuela, an endemic area of cutaneous leishmaniasis: prevalence of 10.7 cases per 100,000 inhabitants. a total of 4863 female sandflies (phlebotominae) of fourteen species were collected in shannon traps, then dissected and examined for leishmanial infections. lutzomyia ovallesi (85.4%) and lu. gomezi (11.2%) were the predominant anthropophilic species of sandfly. fifty-one (1.19%) lu.ovalle ... | 1994 | 7841486 |
| hourly activity of lutzomyia ovallesi and l. gomezi (diptera:psychodidae), vectors of cutaneous leishmaniasis in northcentral venezuela. | the comparative hourly activity of lutzomyia ovallesi (ortiz) and l. gomezi (nitzulescu), vectors of cutaneous leishmaniasis in miranda state, venezuela, was studied between november and march during 1991-1994 using a shannon trap with a fluorescent light. female abundance of l. ovallesi increased from 1800 to 2000 hours, plateaued from 2000 to 2400 hours, then decreased progressively. l. gomezi always exhibited maximum activity between 1900 and 2000 hours, then declined abruptly. the importance ... | 1997 | 9103753 |
| man-vector contact of phlebotomine sand flies (diptera: psychodidae) in north-central venezuela as assessed by blood meal identification using dot-elisa. | human bait is traditionally used to assess man-vector contact, which is a key point in the study of the epidemiology of vector-borne diseases. however, in highly endemic foci, where this method should be avoided, this information could be obtained by blood meal analysis of engorged insects. in the village el ingenio, miranda state, venezuela, lutzomyia ovallesi and lutzomyia gomezi are vectors of cutaneous leishmaniasis (cl). from june 1994 to march 1995, sand flies were collected inside houses ... | 1998 | 9599320 |
| abundance of lutzomyia ovallesi but not lu. gomezi (diptera: psychodidae) correlated with cutaneous leishmaniasis incidence in north-central venezuela. | in north-central venezuela lutzomyia gomezi and lu. ovallesi are the main endophilic/anthropophilic species of phlebotomine sandflies implicated as vectors of cutaneous leishmaniasis (cl). lutzomyia ovallesi has been found infected with leishmania braziliensis (1.2%) and less often with le. mexicana (0.07%), while le. braziliensis infections have also been found in lu. gomezi (0.47%). we investigated population densities of these sandflies using two sampling methods with four series of collectio ... | 1998 | 9622364 |
| cutaneous leishmaniasis vector control perspectives using lambdacyhalothrin residual house spraying in el ingenio, miranda state, venezuela. | an indoor vector control trial was carried out between december 1996 and february 1997, with the aim of reducing the population densities of lutzomyia ovallesi, the proven vector of cutaneous leishmaniasis (cl) in el ingenio, miranda state, venezuela. houses were matched according to their structure ("bahareque" [mud and straw], concrete, and wood) and randomly assigned to a control group (n = 19) or a treated group (n = 20) that was sprayed with 25 mg/m(2) of lambdacyhalothrin. this dose was se ... | 2003 | 16117955 |