Table 2.
Factors associated with dengue infection positive on IgG capture ELISA among individuals with past exposure to dengue, India, 2017–2018
| Variable | Dengue infection (positive on capture ELISA)* (N = 529) | Dengue infection (positive on indirect ELISA)† (N = 4,419) (%) | Odds ratio (95% CI) | Adjusted odds ratio (95% CI) |
|---|---|---|---|---|
| Age group (years) | ||||
| 5–8 | 129 (24.4) | 1,018 (23.0) | 1.3 (1.0–1.6) | |
| 9–17 | 207 (39.1) | 1,456 (33.0) | 1.4 (1.2–1.8) | |
| 18–45 | 193 (36.5) | 1,945 (44.0) | 1 | |
| Sex | ||||
| Female | 289 (54.6) | 2,337 (52.9) | 1.1 (0.9–1.3) | |
| Male | 240 (45.4) | 2,082 (47.1) | 1 | |
| Region | ||||
| Northeast/east‡ | 7 (1.3) | 481 (10.9) | 1 | 1 |
| North | 218 (41.2) | 1,089 (24.6) | 13.8 (6.4–29.4) | 12.9 (6.0–27.6)§ |
| West | 85 (16.1) | 1,275 (28.9) | 4.6 (2.1–10.0) | 4.4 (2.0–9.5)§ |
| South | 219 (41.4) | 1,574 (35.6) | 9.6 (4.5–20.4) | 9.2 (4.3–19.7)§ |
| Area of residence | ||||
| Urban | 338 (63.9) | 2,436 (55.1) | 1.4 (1.2–1.7) | 1.4 (1.2–1.7)‖ |
| Rural | 191 (36.1) | 1,983 (44.9) | 1 | 1 |
*
Based on presence of IgG antibodies against dengue virus (DENV) on capture and indirect ELISA.
†
Based on presence of IgG antibodies against DENV on indirect ELISA.
‡
Very few samples were positive; hence, the data were merged for these two regions.
§
Adjusted for age group and area of residence.
‖
Adjusted for age group and region.