Table 1. Bacterial strains used in this study.

Category	Strain Designation	Relevant genotypea	Reference
Wild-type V. cholerae	P27459	El Tor O1, SmR	[23]
	E7946	El Tor O1, SmR	[23]
	N16961	El Tor O1, SmR	[8]
	O395	Classical O1, SmR	[23]
	PL-21	O6	[24]
	1322-69	O37	[25]
	MO10	O139, SmR	[26]
	203-93	O141	[27]
P4 mutant series	P4	P27459ΔctxAB::KmR, SmR	[28]
	KFV103	P4ΔhlyA	[7]
	KFV105	P4ΔrtxA	[7]
	KFV70	P4ΔhapA	[7]
	VOV3	P4ΔhlyAΔrtxA	[6]
	KFV102	P4ΔhlyAΔhapA	[6]
	KFV98	P4ΔrtxAΔhapA	[6]
	KFV101	P4ΔhlyAΔrtxAΔhapA	[7]

^aSm^R = streptomycin resistant, Km^R = kanamycin resistant.