| the burden of the leishmania chagasi/infantum infection in a closed rural focus of visceral leishmaniasis in lara state, west-central venezuela. | a prospective study was conducted in el brazilar, curarigua, lara state, venezuela, a small rural focus of visceral leishmaniasis (vl) to investigate the burden and the evolution of leishmania infection in the human and canine population. the incidence of the disease from february 1998 to february 2002 was recorded and two cross-sectional surveys using the leishmanin skin test (lst) and immunofluorescent antibody test (ifat) were carried out. the dipstick test with recombinant r-k39 antigen was ... | 2005 | 15860091 |
| the direct agglutination test as an alternative method for the diagnosis of canine and human visceral leishmaniasis. | visceral leishmaniasis is the most severe clinical form of leishmaniasis and is often fatal without proper treatment. therefore, early and accurate diagnosis is important, but often difficult in endemic areas. | 2007 | 18320110 |
| [an entomological and seroepidemiological study of chagas' disease in an area in central-western venezuela infested with triatoma maculata (erichson 1848)]. | this article presents a study on seroepidemiological, entomologic, and risk factors for domiciliary infestation in a circumscribed area infested with triatoma maculata in parroquia xaguas, urdaneta municipality, lara state, venezuela. one hundred and forty households, 509 persons, and 110 dogs were sampled. serum anti-trypanosoma cruzi antibodies were determined by means of elisa and maba techniques using recombinant antigens. tr. cruzi infection in the triatomines was determined by direct micro ... | 2008 | 18949234 |
| lutzomyia ovallesi (diptera: psychodidae) as a vector of cutaneous leishmaniasis in venezuela. | in the search for vectors of cutaneous leishmaniasis in the barro negro forest, duaca, lara state, venezuela, 4,864 wild-caught lutzomyia females were dissected and examined for promastigotes. natural infection was found in 25 (0.5%) lu. ovallesi. by biological parameters and enzyme electrophoresis all isolates from lu. ovallesi were indistinguishable from those obtained from humans and dogs in the same region. the isoenzyme profile of these isolates appear to indicate that strains were a hybrid ... | 1991 | 1841263 |
| [seroprevalence for trypanosoma cruzi infection and associated factors in an endemic area of venezuela]. | this study investigated risk factors associated with positive serological status for trypanosoma cruzi antibodies in 26 rural communities including 905 households, 2,156 humans, and 333 dogs in lara state, venezuela. serology was performed with elisa and maba. data were obtained from entomological, demographic, and clinical surveys. risk factors were determined through binary logistic regression. seroprevalence was 7.24% in humans and 6.9% in canines. positive serological status was positively a ... | 2011 | 22031196 |