Table 3. Trypanosoma cruzi infection and incidence rate among seronegative human residents according to domestic exposure to T. infestans after initial serodiagnosis, Pampa del Indio, 2017.
| House risk level | Exposure to T. infestans* | Seroprevalence (no. examined) | Incidence rate per 100 person-years (exposure time)& |
|---|---|---|---|
| High | Yes | 0 (2) | 0 (13.7) |
| No | 0 (35) | 0 (192.3) | |
| Medium | No | 0 (30) | 0 (147.6) |
| Low | No | 0 (44) | 0 (209.8) |
| Total | 0 (114) | 0 (563.3) |
* After initial serodiagnosis.
& Years lived by the persons in each category, calculated as the sum of time spanned between the initial negative serodiagnosis and re-examination in 2017 for each person.