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Table 3 Transmission by Pulex irritans infected using rat blood and fed sterile rat blood daily starting from day 2 after infection (group III)

From: Poor vector competence of the human flea, Pulex irritans, to transmit Yersinia pestis

Day post-infection Total fleas Fed flea number Infection rate (%) Mean CFU/flea Blocked (B) fleas Partially blocked (PB) fleas B + PB fleas (%) Total CFU transmitted CFU transmitted per fed flea
Exp #1 (fox; Fig. 3)
 0 ND 92 70 3.4 × 104
 2 90 77 80 1.1 × 106 0 0 0 12 0.15
 8 59 44 50 4.6 × 106 0 0 0 0 0
 15 34 25 36 2.6 × 106 0 0 0 41 1.6
  1. ND not determined. The source of the fleas used for the experiments (owl or fox) is indicated