Table 1. Bacterial strains and species used in this study, including LD₅₀ values.

Species	Strain	Source or relevant genotype or phenotypea	LD50 in L. minor (cfu/ml) +/- SEb	LD50 in G. mellonella (cfu)
Burkholderia cepacia	LMG 18821	CF, Australia	1.9x102 +/- 1.2x102	3.0x101 [13]
	LMG 2161	Soil, Trinidad	2.5x10° +/- 5.3x10-1	1.0x100 [13]
B. multivorans	C5393	CF, Canada	>1.0x109	>3.0x106 [13]
	C3430	CF, Canada	>1.0x109	>3.0x106 [13]
	C5274	CF, Canada	3.1x109 +/- 2.4x109	1.0x106 [13]
	C5568	CF, Canada	1.1x108 +/- 8.8x106	>3.0x106 [13]
B. cenocepacia	PC715j	CF, Canada	5.0x10° +/- 5.0x10-1	4.0x103 [13]
	J2315	CF-e, UK	1.6x106 +/- 7x105	1.0x105 [13]
	K56-2	CF-e, Canada	1.2x101 +/- 7.0x10°	9.0x102 [13]
	C1257	CF, Canada	8.8x10° +/- 5.7x10°	4.0x104 [13]
	C4455	CF, Canada	1.01x105 +/- 3.9x104	1.0x105 [13]
	C5424	CF, Canada	5.3x103 +/- 4.5x103	2.0x105 [13]
	C6433	CF, Canada	2.8x104 +/- 2.2x104	3.0x104 [13]
	Cep511	CF, Australia	7.6x10° +/- 3.4x10°	8.0x108 [13]
	K56-2 shvR::TpR	Plasposon insertion into bcas0225	>3.0x108	100% virulence (i.e., ~9.0x102) [30]
B. stabilis	LMG 14294	CF, Belgium	>1.0x109	2.0x106 [13]
	LMG 18870	CF, Canada	>1.0x109	>2.0x106 [13]
B. vietnamiensis	DBO1	Soil, United States	3.7x102 +/- 2.5x102	2.0x105 [13]
	PC259	CF, United States	>1.0x109	>3.0x106 [13]
B. dolosa	AU0645	CF, United States	>1.0x1010	>4.0x106 [13]
	STM1441	Rhizosphere, Senegal	4.8x107 +/- 1.3x107	4.0x104 [13]
B. ambifaria	Cep0996	CF, Australia	5.8x108 +/- 4.4x108	8.0x105 [13]
	AMMD	Rhizosphere, United States	2.5x10° +/- 4.0x10-1	n.d.
B. anthina	J2552	Rhizosphere, UK	4.5x108 +/- 5.2x107	3.0x105 [13]
B. pyrrocinia	ATCC 15958	Soil, Japan	2.5x10° +/- 7.9x10-1	3.0x102 [13]
Acinetobacter baumanii	AYE	Clinical, France	>1.0x109	2.01x105 [52]
	ACICU	Clinical, Italy	>1.0x109	5.58x105 [52]
	ATCC 17978	Clinical, France	>1.0x109	2.42x105 [52]
	SDF	Human body louse	>1.0x109	4.84x107 [52]
Escherichia coli	E2348/69	Parent strain	9.0x101 +/- 3.8x101	2.57x103 [37]
	JPN15	E2348/69 cured of EAF plasmid	7.9x104 +/- 3.0x104	1.2x108 [37]
	ΔescN	E2348/69 deficient in type III secretion	6.9x102 +/- 4.7x102	1.82x105 [37]
	ΔbfpA	E2348/69 deficient in bundle forming pilus	6.0x102 +/- 5.9x102	4.9x103 [37]
	ΔcpxR	E2348/69 deficient in Cpx pathway activation	1.0x102 +/- 9.7x101	4.17x104 [37]
	cpxA24*	E2348/69 with constitutive ON Cpx pathway	6.3x105 +/- 4.9x105	2.5x1010 [37]
	perA::KmR	E2348/69 deficient in type III secretion and bundle forming pilus	<1.0x103	n.d.
Campylobacter jejuni	11168	Feces of diarrheic patient	>1.0x109	n.d. [47]
	81-176	Feces of diarrheic patient	>1.0x109	n.d. [47]
Ralstonia solanacearum	GMI1000	Tomato plant	>1.0x109	n.d.

^aAbbreviations: CF, cystic fibrosis infection; CF-e, strain that has spread epidemically among CF patient; n.d., not determined.

^bS.E., standard error of the mean, included where applicable