Kenneth Gage, plague section chief of the CDC, notes that historically plague may have been transmitted among humans by the so-called human flea, Pulex irritans, or via airborne transmission.
12.
In 1890 he, with Salvatore Calandruccio, described " Dipetalonema reconditum ", a non-pathogenic filarial worm of dogs, and showed that the parasite completed its development in human fleas, " Pulex irritans ".
13.
:: : : But there is a campaign to save the human flea IIRC . People have been quite successful in eliminating this parasite, but how can one set up flea circuses without it?
14.
The attraction consisted of harnessed human fleas racing chariots at the rate of an inch every few seconds, pulling a garden roller, riding a tricycle and " fencing fleas " scrabbling at pins stuck in pieces of cork in a semblance of a sword fight.