Table 1. Summary of body louse infection experiments with Y. pestis KIM6+(pmCherry).

Experiment #	Y. pestis CFU/ml in the infectious blood meal	Total # of lice (n)	Infection rate (day 7 post-infection)	Y. pestis cultured from feces (days 3–7)	Transmission of Y. pestis (days 3–7)	Detection of body lice with PG infection (days 3–7)
Bacteremia level >108 CFU/ml
1*	4.3 × 108	40	40%	+	+	+
2*	5.8 × 108	40	60%	+	+	+
3*	3.5 × 108	40	80%	+	+	+
4	4.5 × 108	46	71%	+	+	+
5	2.6 × 108	44	40%	+	+	+
Average	4.1 × 108	42	58%	+	+	+
Bacteremia level 107–108 CFU/ml
1	2.2 × 107	40	29%	-	+	+
2	1.3 × 107	39	60%	+	+	+
3	2.3 × 107	45	40%	+	+	+
Average	1.9 × 107	41	43%	+	+	+
Bacteremia level 106–107 CFU/ml
1	2.1 × 106	38	60%	+	-	-
2	3.2 × 106	41	20%	+	-	-
3	1.6 × 106	40	22%	+	-	-
Average	2.3 × 106	40	34%	+	-	-
Bacteremia level 105–106 CFU/ml
1	1.4 × 105	32	20%	+	-	-
2	2.4 × 105	43	20%	+	-	-
3	1.2 × 105	40	11%	+	-	-
Average	1.7 × 105	38	17%	+	-	-
Bacteremia level 104–105 CFU/ml
1	3.0 × 104	43	0%	-	-	-
2	2.1 × 104	38	0%	-	-	-
3	1.2 × 104	40	11%	+	-	-
Average	2.1 × 104	40	4%	+/-	-	-

* Data from experiments shown in Fig 1. All louse infections used the delayed transfer infection protocol (Fig 1A).