626
The Examination of Rats for Plague
[April to September inclusive]
Rats examined
Rats found infected
= 19,500
= 23
= 538
the Prevalence of Rat Plague in Hongkong.
[continued]
this investigation has been carried on continuously during the past six months the following short table shows the fleas found in rats, caught alive, and examined at once.
Date Variety of Rat Variety of Fleas found April 25th 1 Rattus 1 Decumanus 5 Pulex Cheopis1 Ctenopsylla musculi Do 5 Decumanus 8 Pulex Cheopis
1 Arg thea 43 Pulex cheopis
2 Dog Fleas