case-control study of cryptosporidium parvum infection in peruvian children hospitalized for diarrhea: possible association with malnutrition and nosocomial infection.a retrospective, hospital-based case-control study was used to investigate whether there were any clinical characteristics that could distinguish cryptosporidium parvum-infected children with diarrhea from other non-c. parvum-infected children with diarrhea. ten percent (24 of 248) of children admitted to a rehydration ward at cayetano heredia university hospital, lima, peru, were infected with c. parvum. the 24 patients infected with c. parvum (cases) were matched to an equal number of noninfec ...19902235186
asymptomatic and symptomatic cryptosporidiosis: their acute effect on weight gain in peruvian children.this study investigated whether a child's first infection with cryptosporidium parvum had an acute effect on weight gain. specifically, the authors compared monthly rates of weight gain between c. parvum-infected and noninfected children. over a 2-year period (1989-1991), a cohort of peruvian children aged 0-3 months at recruitment were followed twice weekly for assessment of daily diarrheal status, weekly for c. parvum stool examinations, and monthly for anthropometric measurements. data on 207 ...19979006312
effects of cryptosporidium parvum infection in peruvian children: growth faltering and subsequent catch-up growth.the authors conducted a 2-year (1989-1991) community-based longitudinal study in a shantytown in lima, peru, to examine the effect of cryptosporidium parvum infection on child growth during the year following the onset of infection. a cohort of children, aged 0-3 months at recruitment, was followed monthly for anthropometrics, weekly for stool samples, and daily for diarrheal status. data from 185 children in the cohort permitted a comparison of growth in c. parvum-infected and noninfected child ...19989737562
identification of 5 types of cryptosporidium parasites in children in lima, peru.cryptosporidium parvum is usually considered to be the pathogen responsible for human cryptosporidiosis. we genotyped cryptosporidium in 132 stool specimens from 80 peruvian children, representing 85 infection episodes, using techniques that differentiate cryptosporidium species and c. parvum genotypes. five types of cryptosporidium were identified: c. parvum human (67), bovine (8), and dog (2) genotypes, c. meleagridis (7), and c. felis (1). twenty-five (29%) of the 85 infection episodes were a ...200111133382
epidemiologic differences between cyclosporiasis and cryptosporidiosis in peruvian children.we compared the epidemiologic characteristics of cyclosporiasis and cryptosporidiosis in data from a cohort study of diarrhea in a periurban community near lima, peru. children had an average of 0.20 episodes of cyclosporiasis/year and 0.22 episodes of cryptosporidiosis/year of follow-up. the incidence of cryptosporidiosis peaked at 0.42 for 1-year-old children and declined to 0.06 episodes/child-year for 5- to 9-year-old children. in contrast, the incidence of cyclosporiasis was fairly constant ...200212023913
longitudinal analysis of cryptosporidium species-specific immunoglobulin g antibody responses in peruvian children.cryptosporidium species are ubiquitous in the environment and are frequently detected in the stools of children who live where sanitation conditions are poor. to better characterize the immune response to these parasites, we monitored immunoglobulin g (igg) antibody levels in a cohort of children from lima, peru. two new enzyme-linked immunosorbent assays based on the c. parvum (bovine, subtype iia) iowa strain 17-kda and 27-kda antigens were used to measure igg antibody levels in longitudinal s ...200616426009
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