intestinal parasitic infections in young children in são paulo, brazil: prevalences, temporal trends and associations with physical growth. | the prevalences of intestinal parasitic infections were investigated, between 1995 and 1996, in a household-based sample of 1044 children aged <5 years who lived in the city of são paulo, brazil. only 10.7% of the children were infected, the most prevalent parasites being giardia duodenalis (5.5%), ascaris lumbricoides (4.4%) and trichuris trichiura (1.0%). a comparison between these data and results from two previous population-based surveys, completed in são paulo in 1974 and 1985, revealed a ... | 2002 | 12194711 |
Detection of assemblages A and B of Giardia duodenalis in water and sewage from São Paulo state, Brazil. | Giardia duodenalis is a protozoan that parasitizes humans and other mammals and causes giardiasis. Although its isolates have been divided into seven assemblages, named A to G, only A and B have been detected in human faeces. Assemblage A isolates are commonly divided into two genotypes, Al and All. Even though information about the presence of this protozoan in water and sewage is available in Brazil, it is important to verify the distribution of different assemblages that might be present, whi ... | 2011 | 21942200 |
giardiasis as zoonosis: between proof of principle and paradigm in the northwestern region of são paulo state, brazil. | in order to evaluate the potential zoonotic transmission of giardia duodenalis, isolates from humans and dogs in the northwestern region of the são paulo state, brazil were characterized based on the β-giardin gene. | 2011 | 21861011 |
molecular characterization of giardia duodenalis in dogs from brazil. | the intestinal protozoan parasite giardia duodenalis (syn. giardia intestinalis and giardia lamblia) is a widespread enteric pathogen in human and domestic animals. this organism is one of the most common parasites in domestic dogs in brazil. in this study, we determined the occurrence and genetic characterization of g. duodenalis isolated from dogs from south-central são paulo state, brazil. a total of 300 fecal samples were collected. fecal specimens were screened for the presence of g. duoden ... | 2011 | 21695567 |
classic and molecular study of giardia duodenalis in children from a daycare center in the region of presidente prudente, são paulo, brazil. | epidemiological studies on giardiasis by using molecular techniques such as rapd (randomly amplified polymorphic dna) may give information on factors related to the transmission of giardia duodenalis. the aim of this work was to assess the epidemiology of g. duodenalis in 101 children attended at a daycare center in presidente bernardes, sp, brazil. after parasitological examinations in feces samples, 15 children presented cysts of g. duodenalis. their respective parents, brothers and pets, besi ... | 2009 | 19229386 |
molecular identification of giardia duodenalis isolates from humans, dogs, cats and cattle from the state of são paulo, brazil, by sequence analysis of fragments of glutamate dehydrogenase (gdh) coding gene. | the nucleotide sequence of glutamate dehydrogenase (gdh) coding genes were obtained from cysts of giardia duodenalis isolated from feces of naturally infected cats (n=19), dogs (n=27), humans (n=37) and cattle (n=5). the samples were from several municipalities within the state of são paulo, brazil and were collected from january 2004 to august 2006. sequences analysis of the 37 specimens recovered from humans revealed 29 g. duodenalis assemblage aii and 8 g. duodenalis assemblage b. among sampl ... | 2007 | 17900812 |
[giardiasis and cryptosporidiosis in children institutionalized at daycare centers in the state of são paulo]. | two cross-sectional studies were conducted, in 2002 (n=379) and 2003 (n=397), to estimate the prevalence of intestinal parasites among children at five municipal daycare centers in botucatu, state of são paulo. socioeconomic, sanitary and educational data were collected and parasitological tests were performed on feces. giardia duodenalis presented prevalence of 23.7% (2002) and 21.4% (2003) followed by cryptosporidium sp with 15.5% (2002) and 3.7% (2003). | 2006 | 17308708 |
occurrence of enteroparasites in day care centers in botucatu (são paulo state, brazil) with emphasis on cryptosporidium sp., giardia duodenalis and enterobius vermicularis. | the occurrence of the enteroparasites was verified in 279 children (0 to 6 years) of four municipal day cares of botucatu/sp. three samples of each child's feces were collected and processed by the methods of hoffman-pons-janner, faust and ritchie and subsequent coloration of the fecal smear by the methods of auramina-o and ziehl-neelsen modified for diagnosis of cryptosporidium sp. and graham method for diagnosis of enterobius vermicularis. of the analyzed children we verified a prevalence of i ... | 2006 | 17086314 |
enteroparasitic occurrence in fecal samples analyzed at the university of western são paulo-unoeste clinical laboratory, presidente prudente, são paulo state, brazil. | this study aims to analyze the enteroparasitic occurrence in children from 0 to 12 years old consulted at the university of western sao paulo clinical laboratory, presidente prudente, sp, brazil, in relation to the socioeconomic profile of the attended children. stool samples were examined and a questionnaire was applied with the objective of knowing the patient's age, sex, medical attendance, characteristic of the habitation, provisioning of water, dejection and domestic waste fates, use of foo ... | 2004 | 15517025 |
occurrence of cryptosporidium oocysts and giardia cysts in raw water from the atibaia river, campinas, brazil. | cryptosporidium parvum and giardia duodenalis are waterborne parasites that have caused several outbreaks of gastrointestinal disease associated with drinking water. due to the lack of studies about the occurrence of these protozoa in water in the southeast of brazil, an investigation was conducted to verify the presence of cysts and oocysts in superficial raw water of the atibaia river. the water samples were submitted to membrane filtration (3.0 microm) and elution was processed by (1) scrapin ... | 2001 | 11340486 |
[correlation between sanitation conditions and intestinal parasitosis in the population of assis, state of são paulo]. | the distribution of the most frequent enteroparasites in the population of assis, state of são paulo, was studied from 1990 to 1992. a total of 18,366 medical examinations from six sanitary care centers in the neighbourhoods of marialves, progresso, city center, xavier, fiúza and bonfim were analyzed. the general prevalence of enteroparasites was 23.3%. the most frequently found enteroparasites were: giardia intestinalis (8.7%), ascaris lumbricoides (5.5%), trichuris trichiura (2.4%) and hymenol ... | 1999 | 10881090 |
[giardiasis and cryptosporidiosis in day-care centers in the municipality campinas sp]. | the prevalence of the giardia duodenalis and cryptosporidium parvum infections were studied in children 2-60 months old (n = 310) grouped to sex and age, enrolled in 8 day-care centers. giardiasis was found in 42 (13.5%) of the children and, was most frequent in the age group corresponding to 19-24 months old although children at the first six months of life also presented positive faecal samples. statistical analysis indicated no association between sex (p > 0.05) and prevalence for giardia inf ... | 1996 | 9011885 |
the prevalence of infection by intestinal parasites in an urban slum in são paulo, brazil. | sedimentation parasitological examinations were performed in stool specimens from a random household-based sample of 407 dwellers, all age groups being represented, in a slum of são paulo, south-eastern brazil. intestinal parasites were detected in 45.7% of the specimens. the most prevalent parasites in this population were ascaris lumbricoides (23.8%) and trichuris trichiura (17.2%); only 17 individuals (4.2%) harboured giardia duodenalis and 6 (1.5%) harboured entamoeba histolytica. taenia and ... | 1994 | 8170003 |