440
Participants
Start Date
December 31, 2015
Primary Completion Date
July 31, 2016
the vaccine with high doses of virus content between 4.7~5.0 lgPFU
the vaccine with low doses of virus content between 4.7~5.0 lgPFU
the vaccine with high doses of virus content between 4.3~5.0 lgPFU
the vaccine with middle doses of virus content between 4.3~5.0 lgPFU
the vaccine with low doses of virus content between 4.3~5.0 lgPFU
placebo
Beijing Chaoyang District Centre for Disease Control and Prevention
OTHER