900
Participants
Start Date
April 30, 2012
Primary Completion Date
September 30, 2012
Study Completion Date
November 30, 2012
A+C+hib Conjugate Vaccine
The group A, C polysaccharide meningococcal and type b haemophilus influenzal conjugate vaccine (Wuxi Royal Biological Co., LTD, 20110101) will be administered on one arm, intramuscularly, per 0.5ml dose
Placebo
Placebo will be administered intramuscularly on the other arm, intramuscularly, per 0.5ml dose
A+C Vaccine
The group A, C polysaccharide meningococcal vaccine (Yunnan Walvax Biotechnology Co., LTD, 20101202) will be administered intramuscularly on one arm, per 0.5ml dose
Hib vaccine
The type b haemophilus influenzal vaccine (Sanofi Pasteur Limited) will be administered intramuscularly on the other arm, per 0.5ml dose
Funing county Center for Disease Control and Prevention, Yancheng
Royal (Wuxi) Biological Co., LTD
OTHER
Jiangsu Province Centers for Disease Control and Prevention
NETWORK