TABLE I. Analysis of the characteristics of the population of Mantena, state of Minas Gerais, Brazil, according to the seropositivity for anti-Orthopoxvirus neutralising antibodies.
| Variables | Tested individuals n (%)a | PRNT positives n (%) | PRNT negatives n (%) | pb |
|---|---|---|---|---|
| Gender | ||||
| Male | 31 (50) | 5 (16.1) | 26 (83.9) | 1.000 |
| Female | 31 (50) | 4 (12.9) | 27 (87.1) | |
| Age (years) | ||||
| ≤ 18 | 19 (30.6) | 0 (0) | 19 (100) | 0.006 |
| 19-26 | 12 (19.4) | 1 (8.3) | 11 (91.7) | |
| 27-36 | 11 (17.8) | 6 (54.5) | 5 (45.5) | |
| > 36 | 20 (32.2) | 2 (10) | 5 (45.5) | |
| Vaccination status | ||||
| Yes | 42 (67.8) | 9 (21.5) | 33 (78.5) | 0.047 |
| No | 20 (32.2) | 0 (0) | 20 (100) | |
| Total | 62 (100) | 9 (14.5) | 53 (85.5) |
a: frequency of tested individuals per category;b: Fisher’s exact test; PRNT: plaque reduction neutralization test.