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Table 2 Bacterial loads dynamics in infected fleas*

From: Transmission efficiency of the plague pathogen (Y. pestis) by the flea, Xenopsylla skrjabini, to mice and great gerbils

Days p.i.

Positive rate % (infected/total fleas)

Bacterial load (CFU/flea)

1

80 (4/5)

3.16 ± 5.09 × 105

2

100 (5/5)

4.90 ± 0.65 × 104

3

100 (5/5)

1.32 ± 0.93 × 105

4

80 (4/5)

1.04 ± 1.10 × 105

5

60 (3/5)

6.40 ± 0.67 × 104

6

100 (5/5)

7.30 ± 1.01 × 104

7

80 (4/5)

7.10 ± 0.67 × 104

8

40 (2/5)

8.10 ± 1.08 × 104

9

40 (2/5)

3.20 ± 0.64 × 104

10

20 (1/5)

1.03 ± 0.22 × 104

11

20 (1/5)

4.02 ± 0.80 × 103

  1. *Fleas were fed with great gerbil blood with Y. pestis of 1.0 × 1010 CFU/ml.