Table 4.

Agglutination of Shigella, ETEC strain C91f (CS2+), and ETEC strain E9034A (CS3+) by postimmunization sera from guinea pigs immunized with various vaccines

Vaccine strainaAgglutinationbby postimmunization sera of bacterial strain:
CVD 1204E9034AC91f
CVD 1204+++
CVD 1204(pGA1-CS3)++++
CVD 1204(pGA1-CS2)++++
CVD 1204(pGA1-CS3) plus CVD 1204(pGA1-CS2)++++++
Control (preimmunization sera)
  • a The assays were performed with pooled sera from each immunized group, 34 days postimmunization with the designated strain.

  • b +++, very strong; ++, strong; +, weak; −, none.