Virulence of Vibrio cholerae [Classical Inaba strain]
	Inoculum
													104										106								108
	Subjects
														13										52								2
	Symptoms
			None
												4 (30%)										10 (19%)										0
		Mild diarrhea
												9 (70%)										28 (54%)										1
		Severe diarrhea
															0							14 (27%)										1