title: [Serological diagnosis of dengue and yellow fever infections in suspected cases from Pará State, Brazil, 1999].
abstract: From June to December 1999, 785 serum samples were obtained from patients clinically suspected of having dengue or yellow fever. The patients were referred by public health centers distributed within the six mesoregions of Par  State, Brazil. Serum samples were tested for Flavivirus antibodies by hemagglutination inhibition test and for dengue and yellow fever viruses by enzyme-linked immunosorbent assay for IgM detection. Of the sera collected, 563 (71.7%) were positive by HI test and out of these 150 (26.6%) were positive by ELISA-IgM. Dengue virus was responsible for most of the recent infections in all regions; yellow fever cases detected in the current study were restricted to the Maraj  and Southeast regions.
authors.affiliation: Centro Colaborador da Organização Mundial de Saúde em Arboviroses e Laboratório de Referência Naciol del Arbovírus do Instituto Evandro Changas, Belém, PA, Brasil. pedrovasconcelos@ied.pa.gov.br
authors.forename: Tais Pinheiro
authors.initials: TP
authors.lastname: de Araújo
authors.forename: Sueli Guerreiro
authors.initials: SG
authors.lastname: Rodrigues
authors.forename: Maria Irene Weyl de A
authors.initials: MI
authors.lastname: Costa
authors.forename: Pedro Fernando da Costa
authors.initials: PF
authors.lastname: Vasconcelos
authors.forename: Amélia P A Travassos
authors.initials: AP
authors.lastname: da Rosa
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D000914:Antibodies, Viral / Q000097:blood*; D001938:Brazil; D016009:Chi-Square Distribution; D003715:Dengue / Q000097:blood / Q000175:diagnosis*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005416:Flavivirus / Q000276:immunology*; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007075:Immunoglobulin M / Q000097:blood*; D008297:Male; D017678:Sex Distribution; D015004:Yellow Fever / Q000097:blood / Q000175:diagnosis*
chemical_list: D000914:Antibodies, Viral; D007075:Immunoglobulin M