An Epidemiological Surveillance Study to Evaluate the Incidence of Dengue in Brazil

Blood samples will be collected at each study visit (Day 0, Month 6, Month 12, Month 24, Month 36 and Month 48) and any time during the study that dengue is suspected. Samples collected at scheduled visits will be tested for anti-dengue antibodies. Samples collected at visits for dengue suspicion will be tested for dengue infection diagnosis.

Diary logs will be issued to all subjects at every visit, except Month 48 (Day 0, Month 6, Month 12, Month 24, and Month 36), as required. Any completed diary logs will be verified, as applicable. Subjects will be given a diary log in the event of the occurrence of a symptom that may be associated with suspected dengue.