Indicator for outbreak of Plague epidemic is: (A) Rat burrow index, (B) Total flea, (C) Specific flea index, (D) Cheopis index
Answer is D. “Cheopis index : It is an average no of X.cheopis per rat. It is a specific flea index. If this index is more than 1, it is regarded as indicative of potential explosiveness of the situation, should a plague outbreak occur”