Foram notificados 12.008 casos de dengue no período de 1997 a 2002, com picos em 1997 (35,80%) e 1998 (45,80%). A doença predominou na faixa etária de 15-49 anos (72,20%) e na estação chuvosa (83,30%), correlacionando-se positivamente com a precipitação pluviométrica (r = 0,84) e a umidade relativa (r = 0,76), e negativamente com a temperatura (r = -0,78). Não houve diferença significativa (chi2 = 2,319; p > 0,05) no número de casos entre os sexos masculino (49,00%) e feminino (51,00%). Os sete distritos sanitários resultaram positivos: Tirirical (27,00%), Coroadinho (17,00%), Bequimão (16,00%), Cohab (14,00%), Itaqui-Bacanga (11,00%), Centro (8,00%) e Vila Esperança (7,00%). O índice de infestação predial oscilou de 1,01 a 7,15 e o índice de Breteau, de 1,10 a 8,18. Os depósitos mais freqüentes foram: tambor e similares (80,00%), vaso de planta (4,70%), garrafa, lata e plástico (3,60%), pneu (3,30%) e caixa d'água (2,70%); os demais representaram 5,7%. Para Ae. aegyptiforam encontrados 134.631 depósitos positivos, predominando os do tipo B (80,00%), seguidos pelos dos tipos C (4,70%), E (3,60%) e A (3,30%).

A total of 12,008 cases of dengue were reported from 1997 to 2002, with peaks in 1997 (35.8%) and 1998 (45.8%). The disease predominated in the 15-49-year age group (72.2%) and during the rainy season (83.3%), showing a positive correlation with the amount of rainfall (r = 0.84) and relative humidity (r = 0.76) and a negative correlation with temperature (r = -0.78). There was no significant difference (chi2 = 2.319; p > 0.05) in the number of cases in males (49%) and females (51%). Dengue was detected in all seven health districts: Tirirical (27%), Coroadinho (17%), Bequimão (16%), Cohab (14%), Itaqui-Bacanga (11%), Centro (8%), and Vila Esperança (7%). The building infestation rate ranged from 1.01 to 7.15, and the Breteau index ranged from 1.10 to 8.18. The most frequent mosquito breeding sites were metal barrels or similar recipients (80.0%), followed by plant vases (4.7%), bottles, cans, and plastics (3.6%), tires (3.3%), water tanks (2.7%), and others (5.7%). In the case of Aedes aegypti, 134,631 positive water deposits were detected, with a predominance of type B (80.0%), followed by types C (4.7%), E (3.6%), and A (3.3%).