252
Participants
Start Date
September 11, 2021
Primary Completion Date
December 25, 2021
Study Completion Date
May 30, 2022
Quadrivalent influenza vaccine
Subjects receive two doses of quadrivalent influenzavaccine administered 4 weeks apart by intramuscularinjection. Each 0.5-ml dosecontained 15 μg of hemagglutinin per strain.
Donghai County Center for Disease Control and Prevention, Lianyungang
Jiangsu Province Centers for Disease Control and Prevention
NETWORK