system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Indicator for the outbreak of Plague epidemic is
assistant
The correct answer is  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