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 an objective means to evaluate zoonotic infection hypothesis.

[Maternal and child intestinal parasitism and breast-feeding].

From March to May 1991, the prevalence of intestinal parasites was detected in 208 children under two-year old, from out patients attending the Public Health Service in Rio de Janeiro. Maternal parasitic infection was simultaneously investigated. Information regarding nurseling's breast-feeding and enteroparasites rates was also recorded.

[Ascaris lumbricoides in infants: a population-based study in Rio de Janeiro, Brasil].

Prevalence and intensity of Ascaris lumbricoides infection were analyzed by a cross-sectional study in children addressed in the city of Duque de Caxias, Rio de Janeiro State, from July to December 1997. The study population consisted of children under two years of age (N=387) and mothers of children under one year of age (N=104). Coproparasitologic tests were run using the MIFC and the Kato thick smear (Kato-Katz) methods.

[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.