1,200
Participants
Start Date
March 31, 2012
Primary Completion Date
May 31, 2012
Study Completion Date
August 31, 2012
Influenza Virus Vaccine(no Preservative )
Influenza Virus Vaccine(no Preservative) 2×0.25ml intramuscular injections
Influenza Virus Vaccine(contains Preservative)
Influenza Virus Vaccine(contains Preservative)2×0.25ml intramuscular injections
Dingxing Center for Disease Prevention and Control, Shijiazhuang
Hebei Center for Disease Control and Prevention
UNKNOWN
Institute of Medical Biology, Chinese Academy of Medical Sciences
OTHER