Article
Evaluation of a generic RT-nested-PCR for detection of flaviviruses in suspected fatal cases of dengue infection, Rio de Janeiro, Brazil
Registro en:
ARAÚJO, Josélio Maria Galvão de; et al. Evaluation of a generic RT-nested-PCR for detection of flaviviruses in suspected fatal cases of dengue infection, Rio de Janeiro, Brazil. Journal of Virological Methods; v.186, n.1-2, p.167-170, 2012.
0166-0934
10.1016/j.jviromet.2012.08.010
1879-0984
Autor
Araújo, Josélio Maria Galvão de
Gomes, Gabriella Mello
Faria, Nieli Rodrigues da Costa
Araújo, Eliane Saraiva Machado de
Filippis, Ana Maria Bispo de
Santos, Flávia Barreto dos
Schatzmayr, Hermann Gonçalves
Nogueira, Rita Maria Ribeiro
Resumen
Flaviviruses are significant causes of disease worldwide and can be classified serologically into several antigenic complexes. The purpose of the present study was to evaluate the effectiveness of a generic RT-nested-PCR for detection of flavivirus during a dengue outbreak in Brazil in 2008. A total of 105 serum samples were collected from patients with fatal outcome and examined by generic RT-PCR, conventional RT-PCR, and IgM serology. The generic RT-PCR confirmed 19 of 105 (18%) cases. Conventional RT-PCR performed on 105 serum samples detected 45 (42.8%) dengue virus infections. The IgM serology confirmed 44 of 102 (43.1%) cases. The infecting serotype was identified by generic RT-PCR in 19 cases (18 DENV-2 and 1 DENV-3) and by conventional RT-PCR in 45 cases (40 DENV-2 and 5 DENV-3). In addition, we analyzed the performance of the generic and conventional RT-PCRs and IgM serology on serum samples stratified by the day of onset of symptoms. Our results indicate that different methods should be included in flavivirus surveillance programs, including virological and serological approaches. 2030-01-01