[1] Hosp Sao Vicente Paulo, Serv Higiene, Rio De Janeiro, Brazil
[2] Hosp Sao Vicente Paulo, Controle Infeccao Hosp, Rio De Janeiro, Brazil
[3] Hosp Sao Vicente Paulo, Serv Clin Med, Rio De Janeiro, Brazil
[4] Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Lab Flavivirus, Rio De Janeiro, Brazil
[5] Minist Saude, Inst Evandro Chagas, Dept Arbovirol & Febres Hemorrag, Ananindeua, PA USA