True statement about plague is -
High-Yield Explanation
- the most efficient method to prevent plaque is control of rat flea. -immunisation with plaque vaccine is a valuable preventive measure. The WHO recommends that under all circumstances, vaccination should be used only for the prevention not the control of human plaque. - killed plaque vaccine is used. Reference : Park's textbook of preventive and social medicine, 23rd edition pg no:296 <\p>