| can mosquito magnet® substitute for human-landing catches to sample anopheline populations? | the efficiency of the mosquito magnet liberty plus™ (mmlp) trap was evaluated in comparison to human-landing catches (hlcs) to sample anopheline populations in jabillal, state of bolivar, southern venezuela. the village comprised 37 houses and a population of 101; malaria in this village is primarily due to plasmodium vivax and the annual parasite index is 316.8 per 1,000 population. a longitudinal study was conducted between june 2008-january 2009 for three nights per month every two months bet ... | 2012 | 22666868 |
| malaria seroprevalence in blood bank donors from endemic and non-endemic areas of venezuela. | in venezuela, a total of 363,466 malaria cases were reported between 1999-2009. several states are experiencing malaria epidemics, increasing the risk of vector and possibly transfusion transmission. we investigated the risk of transfusion transmission in blood banks from endemic and non-endemic areas of venezuela by examining blood donations for evidence of malaria infection. for this, commercial kits were used to detect both malaria-specific antibodies (all species) and malaria antigen (plasmo ... | 2011 | 21537669 |
| [malaria and pregnancy. san isidro parish, municipality sifontes, state of bolívar, venezuela, 2005-2006]. | malaria in pregnancy constitutes a world-wide public health problem. with the objective of studying malaria in pregnancy, a cross-sectional, descriptive epidemiological study was carried out on 449 women, in mining areas of the san isidro parish, municipality sifontes, state of bolívar, venezuela, during 2005-2006. the malaria incidence in pregnant women was 27.4%: 87% for plasmodium vivax, 12.2% plasmodium falciparum and 0.8% mixed infections. these infections appeared mainly during the second ... | 2009 | 20306719 |
| genetic diversity of merozoite surface protein-1 gene of plasmodium vivax isolates in mining villages of venezuela (bolivar state). | the merozoite surface protein-1 gene of plasmodium vivax is highly polymorphic and so, currently used in epidemiological studies of p. vivax malaria. we sequenced the variable block 5 of the gene from 39 venezuelan isolates, 18 of which were co-infected with plasmodium falciparum. we observed a limited variability with 34 isolates belonging to the type salvador i, none belem type and only five recombinants. among the recombinants, only two types of sequences were observed with, respectively, 18 ... | 2005 | 15862584 |
| diagnosis of malaria by acridine orange fluorescent microscopy in an endemic area of venezuela. | fluorescent (acridine orange) microscopical examination of capillary centrifuged blood (quantitative buffy coat [qbc] analysis) and giemsa stained thick blood smears (gts) were compared for diagnosis of malaria in blood specimens from adults living in malaria transmission areas of the states of bolivar and amazonas in southeastern and south venezuela, respectively. of a total of 198 gts examined, 95 subjects (48%) showed parasitaemia. among the 95 blood films with a positive gts, 94 were judged ... | 1996 | 8734954 |
| use of the polymerase chain reaction to directly detect malaria parasites in blood samples from the venezuelan amazon. | we have examined the reproducibility, sensitivity, and specificity of detecting plasmodium falciparum using the polymerase chain reaction (pcr) and the species-specific probe ppf14 under field conditions in the venezuelan amazon. up to eight samples were field collected from each of 48 consenting amerindians presenting with symptoms of malaria. sample processing and analysis was performed at the centro amazonico para la investigacion y control de enfermedades tropicales simon bolivar. a total of ... | 1994 | 8116809 |
| a polytene chromosome study of four populations of anopheles aquasalis from venezuela. | polytene chromosome studies were undertaken to elucidate taxonomic relationships among populations of anopheles aquasalis and a. emilianus in venezuela. four collection sites were chosen: two in sucre state (santa fe and guayana) where a. aquasalis (considered to be a. emilianus by gabaldón and escalante) is presumed to be the major regional vector of plasmodium vivax; and two in areas where no malaria transmission occurs (caño rico, aragua state, and puerto cabello, carabobo state). the chromos ... | 1992 | 1618392 |