Table 1. Percentages of cross–reactive, Ogawa–specific and Inaba specific antibodies in immune sera from CD1 mice after intraperitoneal vaccination with formalin–killed bacteria of strains MS1568 and Phil6973.

Antibody specificity	Vaccine strain
	MS1568	Phil6973
Cross–reactive	31±28%	94±2%
Ogawa–specific (anti–B)	61±28%	<0.1%
Inaba–specific (anti–C)	8±3%	6±2%

These values were calculated from vibriocidal measurements of antibody titers against Inaba and Ogawa test organisms before and after absorption of immune sera with formalin killed Inaba or Ogawa bacteria. Percentages of antibody activity shown are mean values ± SEM from 3 CD1 mice per vaccine strain.