Table 5.

Close Study: Seroconversion rate in seropositive children and increase titer following two doses of Rubella TAKAHASHI

Virus Strain	Virus content CCID50/dose	Age at first vaccination Month(Number)	Age at Second vaccination Month(Number)	Total children inoculated	% Seroconversion After first vaccination	Increase of Titer after the second vaccination
TAKAHASHI	3.87	9-11(8)	18-24(16)	24	100	2-3 folds
RA/27	4.00	9-11(8)	18-24(16)	24	100	2-3 folds

An increase of at least 2-3 folds in HI titers was observed following reimmunization with both vaccines.