In total flea index true is -
<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>
Average all Xenopsella cheopis per rat
Average number of all fleas of all species per rat
Average number of all fleas in a burrow
Average number of all fleas in all species of rats to per burrow
Communicable diseases