Table 4.

Percentage of Pgm⁺ colonies on days 1–4 p.i. of the parent or biofilm-overproducing strain from either X. cheopis or O. montana

Flea species	Bacterial strain	Day p.i.	Mean percentage of Pgm+ colonies*
X. cheopis	Parent KIM5(pCD1Ap)+	1	99.9 (99.1–100.0)
		2	99.8 (99.5–100.0)
		3	99.9 (99.3–100.0)
		4	99.9 (99.8–100.0)
	Biofilm overproducer ΔhmsP KIM6-2097.7(pCD1Ap)+	1	99.4 (98.1–100.0)
		2	96.3 (95.0–100.0)
		3	87.4 (68.3–100.0)
		4	95.8 (78.4–100.0)
O. montana	Parent KIM5(pCD1Ap)+	1	98.6 (87.5–100.0)
		2	100.0 (100.0–100.0)
		3	100.0 (100.0–100.0)
		4	100.00 (100.0–100.0)
	Biofilm overproducer ΔhmsP KIM6-2097.7(pCD1Ap)+	1	100.0 (100.0–100.0)
		2	99.4 (95.3–100.0)
		3	99.5 (97.2–100.0)
		4	99.8 (78.4–100.0)

*The range is given in parentheses.