Table 6. Incidence rates (IR) per 1,000 person-years of dengue infections in the cohort in Yucatan, Mexico by age, gender, and city (N = 1,890).
Person-years at risk (N) | Dengue infections | IR (95%CI) | |
---|---|---|---|
All participants | 2271(1890) | 83 | 36.55 (29.3, 45.1) |
Age (Years) | |||
≤ 8 | 692.84 (624) | 35 | 50.5 (35.7, 69.5) |
9–14 | 359.74 (305) | 17 | 47.3 (28.5, 74.1) |
15–19 | 92.91 (76) | 9 | 96.9 (47.2, 177.8) |
20–49 | 959.68 (757) | 23 | 23.9 (15.6, 35.4) |
≥ 50 | 166.11 (128) | 5 | 30.1 (11.0, 66.7) |
Gender | |||
Male | 984.49 (882) | 27 | 27.4 (18.4, 39.4) |
Female | 1286.79 (1008) | 62 | 48.2 (37.3, 61.4) |
City | |||
Merida | 1248.14 (1032) | 51 | 40.9 (30.7, 53.3) |
Progreso | 481.76 (401) | 27 | 56.1 (37.7, 80.4) |
Ticul | 540.38 (457) | 11 | 20.4 (10.7, 35.4) |
Prior exposure to dengue | |||
Naïve | 645.80 (542) | 74 | 114.6 (90.6, 143) |
Non-naïve | 1625.20 (1348) | 9 | 5.5 (2.7, 10.1) |