| enteric parasites and hiv infection: occurrence in aids patients in rio de janeiro, brazil. | the occurrence of intestinal parasites, its relation with the transmission mechanism of hiv, and the clinical state of the aids patients, were analyzed in 99 group iv patients (cdc, 1986), treated at "hospital universitário pedro ernesto" (hupe), between 1986 and 1988. the group consisted of 79 (79.8%) patients whose hiv transmission mechanism took place through sexual contact and of 16 (20.2%) who were infected through blood. feces samples from each patient were examined by four distincts metho ... | 1989 | 2487448 |
| [intestinal parasitoses in preschool children of the slum communities of the city of rio de janeiro, brazil]. | prevalence of intestinal parasites was investigated in 1381 low-income children under five years of age from march 1990 to october 1991 in the city of rio de janeiro, brazil. stool tests were run using the blagg et al. method. observed prevalence of infection was 54.5%. the most frequent parasites were giardia lamblia and ascaris lumbricoides (25.0% of the children). a significant statistical difference (p<0.05) was demonstrated between age and infection according to the species of parasite stud ... | 1998 | 9878918 |
| genotyping of giardia duodenalis from human and animal samples from brazil using beta-giardin gene: a phylogenetic analysis. | giardia duodenalis is one of the major diarrhea agents in human and animals distributed worldwide, and present high levels of genetic diversity, showing seven genotypes: a, b, c, d, e, f, and g. only assemblages a and b have been detected in humans and in a wide range of other mammalians hosts, whereas the remaining assemblages (c-g) are host-specific. molecular characterization of cysts of human and animal origin are useful to address the co-circulate isolates between these host, and represents ... | 2007 | 17428432 |
| detection of cryptosporidium spp and other intestinal parasites in children with acute diarrhea and severe dehydration in rio de janeiro. | the objective of the present study was to estimate the frequency of infection by cryptosporidium spp and other intestinal parasites in dehydrated children with gastroenteritis who were admitted to a pediatric hospital. stool examinations from 218 children were performed. cryptosporidium spp was identified in eighteen out of 193 stool samples (9.3%) subjected to safranin-methylene blue staining. giardia lamblia was detected in ten out of 213 (4.7%) samples examined via the direct or ritchie metho ... | 2007 | 17653475 |
| geospatial distribution of intestinal parasitic infections in rio de janeiro (brazil) and its association with social determinants. | intestinal parasitic infections remain among the most common infectious diseases worldwide. this study aimed to estimate their prevalence and provide a detailed analysis of geographical distribution of intestinal parasites in the metropolitan region of rio de janeiro, considering demographic, socio-economic, and epidemiological contextual factors. | 2017 | 28273080 |
| new multilocus genotypes of giardia lamblia human isolates. | giardia lamblia is considered a species complex, whose members show little differences in their morphology, but have remarkable genetic variability. the aim of this study was to identify inter- and intra-assemblage genetic variation in g. lamblia among patients in rio de janeiro. the parasitological study was performed on faeces, and dna was extracted from the samples which tested positive for g. lamblia. the genetic assemblages and subtypes were determined via multilocus sequence typing (mlst) ... | 2017 | 28669825 |
| associations of giardia lamblia assemblages with hiv infections and symptomatology: hiv virus and assemblage b were they born to each other? | giardia lamblia is an intestinal parasite that has an extensive genetic variation among isolates. this species is divided into eight different assemblages (a-h), but only assemblages a and b have been associated with human infections. studies on the associations of g. lamblia assemblages and symptoms have been done but were inconclusive. the aim of this study was to correlate g. lamblia assemblages with symptoms in patients with and without hiv/aids and its association with the cd4t cell count. ... | 2017 | 28456597 |
| molecular characterization of giardia lamblia: first report of assemblage b in human isolates from rio de janeiro (brazil). | despite the high prevalence of giardiasis, the genetic characterization of giardia lamblia has been poorly documented in brazil and molecular epidemiology research has only been conducted in the last few years. the aim of this study was to determine the prevalence of different g. lamblia assemblages and detect mixed infections among patients with giardiasis. | 2016 | 27517469 |