showed a trendP = 0.06
There were no significant differences in seropositivity among males versus females; RR 1.08 (95% CI 0.58–2.01), P = 0.82, while having a link with schools (teachers or students) showed a trend to be associated with seropositivity RR 1.85 (95% CI 0.96–3.57), P = 0.06.