Table 1. Prevalence of immunoglobulin G (IgG) antibodies to Trypanosoma cruzi in persons in southern area of the State of Mexico*†.
| No. positive test results‡ | Total screened |
Tejupilco |
Temascaltepec |
|||
|---|---|---|---|---|---|---|
| No. (%) | % of population | No. (%) | % of population | No. (%) | % of population | |
| 0 | 321 (90.1) | 268 (91.5) | 55 (87.31) | |||
| 1 | 22 (6.2) | 14 (4.78) | 6 (9.52) | |||
| 2 | 7 (2.0) | 98.3 | 5 (1.7) | 97.95 | 2 (3.17) | 100 |
| 3 | 1 (0.28) | 1 (0.35) | 0 | |||
| 4 | 2 (0.56) | 2 (0.68) | 0 | |||
| 5 | 3 (0.85) | 1.7 | 3 (1.02) | 2.05 | 0 | 0.0 |
| Total | 356 (100) | 293 (100) | 63 (100) | |||
*Samples positive in >3 tests were considered seropositive (shown in boldface). †All except 2 participants seropositive for IgG antibodies by >2 tests were 5–18 y of age. ‡Level of agreement for serologic data for 5 tests: concordance level 98.2; κ coefficient 0.618; 95% confidence interval 0.622–0.714.