Publications

prevalence of human parvovirus (b19) and rubella virus infections in urban and remote rural areas in northern brazil.	sera from inhabitants of belém, pará (542 sera), brazil and of members of 3 brazilian tribes--tiriyo/alto paru (near surinam) (212 sera), xicrin (128 sera), and mekranoiti (121 sera)--of different age and sex groups were tested for the presence of specific antibody against human parvovirus (b19) (ria) and rubella virus (latex agglutination test). parvovirus (b19) igg was found in 42.6% of the population sample from belém but in only 4.7 to 10.7% of the members of the tribes. rubella virus antibo ...	1990	1964474
parvovirus b19 antibodies in sera of patients with unexplained exanthemata from belém, pará, brazil.		1993	8107612
outbreaks of human-herpes virus 6 (hhv-6) infection in day-care centers in belém, pará, brazil.	a total of 730 children aged less than 7 years, attending 8 day-care centers (dccs) in belém, brazil were followed-up from january to december 1997 to investigate the occurrence of human-herpes virus 6 (hhv-6) infection in these institutional settings. between october and december 1997 there have been outbreaks of a febrile- and -exanthematous disease, affecting at least 15-20% of children in each of the dccs. both serum- and- plasma samples were obtained from 401 (55%) of the 730 participating ...	2000	11136516
association between human parvovirus b19 and arthropathy in belém, pará, north brazil.	a total of 220 patients with arthropathy were selected in belém, pará between january 1994 and december 2000, and screened for the presence of human parvovirus b19 igm and igg antibodies by enzyme-linked immunosorbent assay (elisa). a subgroup (n = 132) of patients with high levels of antibodies (either igm+/igg+ or igm-/igg+) were examined for the presence of dna by polymerase chain reaction/nested pcr. recent/active infection (detection of igm and/or igg-specific antibodies and presence of vir ...	2002	11896408
the "pressure pan" evolution of human erythrovirus b19 in the amazon, brazil.	to understand the evolutionary dynamics of human parvovirus b19, we analyzed vp1 and vp2 gene sequences of b19 sampled from belém (amazon), the city of são paulo, brazil and globally. our analysis revealed a strikingly different pattern of evolutionary change for those viral lineages introduced into belém, which exhibited a higher rate of nonsynonymous substitutions compared to those viruses sampled from other locations. we propose that difference this is due to the high prevalence of b19 in bel ...	2007	17698162