| [occurrence of parvovirus b19 in manaus, am]. | investigation of 1,107 cases of exanthematous diseases in manaus allowed the identification of the first 47 cases of human parvovirus b19 in the city. parvovirus b19 was characterized by a combination of signs and symptoms such as fever, chronic headache, arthralgia, myalgia and exanthema. the frequency of exanthema was higher in individuals less than fifteen years old. in adults, fever and arthropathy were the most frequent symptoms. the highest number of cases was registered in 1999. regarding ... | 2005 | 16172754 |
| 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 |
| molecular characterization of human erythrovirus b19 strains obtained from patients with several clinical presentations in the amazon region of brazil. | human erythrovirus b19, endemic in the amazon region since 1990, is associated with a wide spectrum of clinical presentations. | 2008 | 18502682 |