In total flea index true is -: (A) Average all Xenopsella cheopis per rat, (B) Average number of all fleas of all species per rat, (C) Average number of all fleas in a burrow, (D) Average number of all fleas in all species of rats to per burrow
Answer is B. <p> Total flea index: it is the average number of flea of all species per rat. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:294 <\p>