| lutzomyia evansi, an alternate vector of leishmania chagasi in a colombian focus of visceral leishmaniasis. | | 1990 | 2278068 |
| didelphis marsupialis, an important reservoir of trypanosoma (schizotrypanum) cruzi and leishmania (leishmania) chagasi in colombia. | the role of didelphis marsupialis as a reservoir of zoonotic hemoflagellates was examined in two ecologically distinct settings in colombia. while 72% (12 of 18) of the opossums collected in the tropical rain forest harbored trypanosoma cruzi, other mammals in the area had lower infection rates: 1.3% (proechymis semispinosus [spiny rat]; 13% tylomys mirae [climbing rat]; and 6% rattus rattus). trypanosoma cruzi isolates from d. marsupialis were similar to zymodeme 1 (z1), and two of four phenoty ... | 1994 | 8203703 |
| bionomics of lutzomyia evansi (diptera: psychodidae) vector of visceral leishmaniasis in northern columbia. | the feeding behavior, seasonality, and natural infection rate of lutzomyia evansi (nuñez-tovar) with leishmania chagasi (cuna & chagas) was studied during a 12-mo period at 2 hamlets, el contento and vidales. sand fly abundance in extra-, peri-, and intradomestic habitats was evaluated with sticky traps and cdc light traps, whereas human bait and shannon trap collections were made only in peridomestic habitats. all trapping methods showed a clear predominance of l. evansi throughout the year. sa ... | 1996 | 8667372 |
| the re-emergence of american visceral leishmaniasis in an old focus in venezuela. ii. vectors and parasites. | as part of an epidemiological study in an old focus of american visceral leishmaniasis (avl) in venezuela (guayabita, aragua state), a longitudinal entomological survey (january 1993-june 1994) was carried out. a total of 3,239 males and 6,043 females belonging to 11 phlebotomine sandfly species were collected. the two recognised vectors of avl in the new world, lutzomyia evansi and lu. longipalpis were found to be sympatric. lutzomyia evansi was the dominant species (86.4%), almost ten fold tim ... | 1999 | 10416185 |
| widespread atypical cutaneous leishmaniasis caused by leishmania (l.) chagasi in nicaragua. | leishmania chagasi, the causative agent of visceral leishmaniasis (vl) in the americas, has recently been associated with atypical cutaneous leishmaniasis (acl) in central america; however, little comprehensive information about this disease is available. clinical, epidemiologic, and parasitologic characteristics of 252 acl cases and 44 vl cases in nicaragua were analyzed. visceral leishmaniasis is primarily associated with malnourished children less than five years of age, whereas acl is found ... | 1999 | 10497975 |
| canine visceral leishmaniasis: dog infectivity to sand flies from non-endemic areas. | canine visceral leishmaniasis (vl), caused by leishmania infantum (leishmania chagasi in the new world), is a zoonotic, endemic disease in western europe and latin america. the potential spreading to new regions was suggested by the appearance of canine vl among foxhounds in the us. although the sand fly vectors in the major foci of transmission have been described, no information exists on other sand flies that could propagate the infection outside endemic areas. we evaluated the capacity of lu ... | 2002 | 12002643 |
| impact of habitat degradation on phlebotominae (diptera: psychodidae) of tropical dry forests in northern colombia. | we examined changes in the phlebotomine fauna resulting from human intervention in a tropical dry forest of northern colombia where visceral and cutaneous leishmaniases are endemic. a natural forest reserve (colosó) and a highly degraded area (san andrés de sotavento [sas]) were sampled monthly for 8 mo using shannon traps, sticky traps, and resting-site collections. overall abundances were higher in colosó (15,988) than in sas (2,324). and species richness of phlebotomines was greater in the fo ... | 2002 | 12061439 |
| comparative vectorial efficiency of lutzomyia evansi and lu. longipalpis for transmitting leishmania chagasi. | the infection rates and development of leishmania chagasi in two sandfly species, lutzomyia evansi and lutzomyia longipalpis, were evaluated under natural and experimental conditions. natural infection rates of lu. evansi in san andrés de sotavento (colombia) and montañas de peraza (venezuela) (0.05 and 0.2%, respectively) were similar to those previously recorded for this species in colombia and venezuela and for lu. longipalpis in many foci of american visceral leishmaniasis (avl). both sand f ... | 2003 | 12505180 |
| feeding success of lutzomyia evansi (diptera: psychodidae) experimentally exposed to small mammal hosts in an endemic focus of leishmania chagasi in northern colombia. | lutzomyia evansi is the vector of leishmania chagasi in northern colombia. differences in feeding success were revealed, when this phlebotomine sand fly was fed on five species of small mammal hosts from an endemic focus of visceral leishmaniasis. in each trial, 50 female sand flies were provided access to similar-sized depilated areas of the hind foot of each of 44 individual mammals and allowed to feed for 30 minutes. the number of engorged sand flies was counted at the end of each trial and c ... | 2003 | 14968917 |
| cutaneous leishmaniasis due to leishmania chagasi/le. infantum in an endemic area of guarico state, venezuela. | this study reports cutaneous leishmaniasis (cl) caused by leishmania chagasi/le. infantum in venezuela, with some atypical characteristics. out of 63 cases of cl in the suburbs of altagracia de orituco, guarico state, venezuela, 30 presented clinical, parasitological, immunological and epidemiological features different from those of the classical cl known in the country. the initial lesion was small and nodular, which, if not treated, might progress to a superficial ulcer. no secondary infectio ... | 2009 | 19150102 |
| predicted altitudinal shifts and reduced spatial distribution of leishmania infantum vector species under climate change scenarios in colombia. | visceral leishmaniasis (vl) is caused by the trypanosomatid parasite leishmania infantum (=leishmania chagasi), and is epidemiologically relevant due to its wide geographic distribution, the number of annual cases reported and the increase in its co-infection with hiv. two vector species have been incriminated in the americas: lutzomyia longipalpis and lutzomyia evansi. in colombia, l. longipalpis is distributed along the magdalena river valley while l. evansi is only found in the northern part ... | 2014 | 23988300 |