| [determination of entamoeba histolytica infection in patients from greater metropolitan belém, para, brazil, by enzyme-linked immunosorbent assay (elisa) for antigen detection]. | the epidemiological status of amebiasis has been reevaluated since entamoeba histolytica (pathogenic) was considered a distinct species from entamoeba dispar (non-pathogenic). we investigated e. histolytica antigens in stool samples from residents of belém, para state, brazil, with commercially available enzyme-linked immunosorbent assay (e. histolytica test, techlab inc., blacksburg, usa). a total of 845 samples were analyzed, of which 248 were positive (29.35%). e. histolytica infection was mo ... | 2005 | 15868057 |
| [diagnosis of intestinal amebiasis using coproscopic and immunological methods in a population sample in greater metropolitan belém, pará, brazil]. | we compare diagnostic methods for entamoeba histolytica in fecal samples from the city of belém, pará, brazil. we analyze stool samples from children and adults (group i); stool and serum samples from adults (group ii); and stool samples from children (group iii). in groups i and iii, we used direct examination with lugol (dm), faust et al (fm), and elisa (detection of e. histolytica anti-giap coproantigen) and in group ii, dm, iron hematoxylin staining (ihs), fm, elisa, and the indirect immunof ... | 2000 | 11035523 |
| [intestinal parasitism in a parakanã indigenous community in southwestern pará state, brazil]. | to determine the occurrence and epidemiological aspects of intestinal parasites among the parakanã indigenous people in the paranatinga settlement (in the eastern amazon region), parasitological tests were performed in april 1992 and february 1995. one fresh stool specimen was obtained and immediately processed using the hoffman and direct methods. some 126 samples were obtained in april 1992 (from a total population of 215 individuals). some 80. 2% (101) of those tested were infected with at le ... | 1998 | 9761604 |
| rotaviruses as a cause of nosocomial, infantile diarrhoea in northern brazil: pilot study. | faecal samples were obtained from 190 children, aged 0 to 5 years, admitted to a public hospital in belém, pará, brazil. these patients were placed in a pediatric ward with 40 beds distributed in six rooms. cases were classified into three groups: (a) nosocomial: children who developed gastroenteritis 72 hr or later after admission; (b) community-acquired: patients admitted either with diarrhoea or who had diarrhoea within 72 hr following admission; (c) non-diarrhoeic: those children who had no ... | 1995 | 8731371 |