| Progression to infection (n = 25) | Without progression (n = 61) | AOR (95% CI) | ||
| Sex | ||||
| Male | 19 | 50 | ||
| Female | 6 | 11 | 2.61 (0.71 to 9.58) | |
| Age (yrs) | ||||
| ⩽40 | 11 | 36 | ||
| >40 | 14 | 25 | 0.66 (0.19 to 2.23) | |
| Genotype | ||||
| B2 | 5 | 31 | ||
| C2 | 20 | 30 | 6.97 (1.59 to 30.63) |
AOR, adjusted odds ratio; CI, confidence interval.