Publications

a seroepidemiological study of amebiasis in adults in maracaibo, venezuela.	eight hundred and forty-eight sera collected from adult patients attending the central and university hospitals and from blood donors at the blood bank in maracaibo, venezuela, were screened for serologic evidence of entamoeba histolytica infection, employing the indirect hemagglutination test. the seropositivity rates obtained ranged from 4.4-6.5% and most of the positive sera showed low titers of 1:128-1:256. a predominance of positive reactors was observed in the first decades of life with a ...	1981	6275725
a seroepidemiological study of amebiasis in children of low socioeconomic level in maracaibo, venezuela.	sera collected from 606 children of low socioeconomic level attending the university and children's hospitals in maracaibo, venezuela, were screened for serologic evidence of entamoeba histolytica infection, employing the indirect hemagglutination test. the seropositivity rate was 7.7%. most of the positive sera showed low titers (1:128-1:256). the overall prevalence of positive reactors increased with age. stool examinations done on 516 children revealed cysts or trophozoites of e. histolytica ...	1982	7149096
[seroepidemiologic study of amebiasis in a community of the state of zulia, venezuela].	in the present evaluation, a community of low socioeconomical conditions from zulia state, venezuela, was analyzed for the prevalence of antibodies to e. histolytica. two hundred and eighty three serum samples were collected and examined by the indirect hemagglutination test according to a microtiter modification of the kessel and lewis method, as used by milgram et al. antigen prepared from axenically-grown. e. histolytica strain hk9 in diamond's medium was used. the seropositivity rate obtaine ...	1990	2135495
[prevalence of entamoeba histolytica and other intestinal parasites in a neighborhood of the mara municipality, zulia state, venezuela].	a parasitologic survey of a low socioeconomic level community from mara county, zulia state, venezuela was done. a single stool specimen per person from 327 individuals was obtained and examined by hematoxylin stained fecal smears and formol-ether concentrates. the overall parasitic infection rate was 92%. multiple infections were present in 89% of the population. the amebic prevalence rate (apr) was 41.5%. entamoeba histolytica was found in 9.2% of the individuals, most of them being asymptomat ...	1990	2090263
prevalence of entamoeba histolytica and other intestinal parasites in a community from maracaibo, venezuela.	the prevalences of entamoeba histolytica and other intestinal parasites were assessed in a suburban community of maracaibo, venezuela, by examination of a stool specimen from each of 342 individuals, using iron-haematoxylin stained faecal smears and formalin-ether concentration. the overall parasitic infection rate was 80.4%, and 65.8% of the population had multiple infections. the overall amoebic infection rate, which was highest in female adults, averaged 39.7%. the e. histolytica infection ra ...	1992	1463357
cryptosporidiosis among patients with acquired immunodeficiency syndrome in zulia state, venezuela.	we studied the prevalence of cryptosporidium in 29 patients with acquired immunodeficiency syndrome (aids) from zulia state, venezuela. they ranged in age from five months to 46 years. two were children and 27 were adults, of which six were women. of the 21 men, 66.6% reported homosexual behavior. three stool samples from each patient were examined, and modified ziehl-neelsen carbolfuchsin staining of formalinether stool concentrates was used to identify cryptosporidium oocysts. to detect the pr ...	1992	1449198
[prevalence of intestinal parasites in children of yukpa ethnia in toromo, zulia state, venezuela].	yupkpa community in perijá sierra does not have drinking water or sewage elimination systems. thus it becomes a propitious place for infection with intestinal parasites.	2006	16532165
[cryptosporidium sp infections and other intestinal parasites in food handlers from zulia state, venezuela].	cryptosporidiosis in food handlers from venezuela is unknown, being this an important public health problem in immunosuppressed patients. to determine the prevalence of cryptosporidium sp and other intestinal parasites in food handlers from zulia state, one hundred nineteen fecal samples were evaluated by wet mount, concentrated according to ritchie and modified ziehl-neelsen staining. fourteen (11.8%) were positive for cryptosporidium sp and associated with other protozoosis (p < 0.05), being m ...	2009	19418723
[detection and differentiation of entamoeba histolytica and entamoeba dispar by polymerase chain reaction in a community in zulia state, venezuela].	differential identification of entamoeba histolytica and entamoeba dispar is essential for both appropriate patient treatment and epidemiological purposes. to determine the prevalence of these amoeba infections in santa rosa de agua (maracaibo, zulia state, venezuela), a pcr assay using specific primers for each species was standardized and applied. 204 stool samples were analyzed through direct microscopic examination with ssf (0.85%) and lugol, formol-ether concentration, and pcr. under direct ...	2009	19180297