1,224
Participants
Start Date
September 11, 2020
Primary Completion Date
November 26, 2020
Study Completion Date
October 9, 2021
IIV4 and PPV23
imultaneously immunization of 23-valent pneumococcal polysaccharide vaccine (PPV23) and quadrivalent inactivated influenza vaccine (IIV4)
IIV4
administrated with IIV4 only
PPV23
administrated with PPV23 only
Liucheng Community Health Services Center, Quanzhou
Luodong County Health Center, Quanzhou
Qingzhen Center for Disease Control and Prevention, Qingzhen
Qidong County Center for Disease Control and Prevention, Hongqiao
Center for Disease Control and Prevention, Fujian
OTHER
Chengdu Institute of Biological Products Co.,Ltd.
INDUSTRY
Changchun Institute of Biological Products Co., Ltd.
INDUSTRY
National Institutes for Food and Drug Control, China
OTHER
Guizhou Center for Disease Control and Prevention
OTHER
Hunan Provincial Center for Disease Control and Prevention
OTHER
Peking University
OTHER
China National Biotec Group Company Limited
INDUSTRY