The BI was less than 50% in all four villages. So, a high risk oftransmission was not considered. On the other hand, the BI was<5% in three out of four villages, which was not considered alow risk of transmission. Similarly, the HI of Gopalpur villagewas >10%, which was considered a high risk of transmission.However the HI was not <1% in the other three villages, so thiscould not be considered a low risk of transmission.14
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