Study on Combined Vaccination With Quadrivalent Influenza Vaccine and 23-valent Pneumococcal Polysaccharide Vaccine

Immunogenicity and Safety of Quadrivalent Influenza Vaccine Combined Immunization With 23-valent Pneumococcal Polysaccharide Vaccine in the Elderly Aged 60 Years and Above

This study is an open-label,single center phase Ⅳ clinical trial of combined immunization with quadrivalent influenza vaccine and 23-valent pneumococcal polysaccharide vaccine.The purpose of this study is to evaluate the safety and immunogenicity of combined immunization with quadrivalent influenza vaccine and 23-valent pneumococcal polysaccharide vaccine in the elderly aged 60 years and above.

This study is an open-label,single center,phase IV clinical trial in the elderly aged 60 Years and above.The experimental vaccines were manufactured by Sinovac Biotech Co., Ltd. A total of 3000 subjects will be enrolled,the safety and immunogenicity of combined immunization were evaluated in 480 subjects,and the Safety observation of combined immunization was evaluated in the extended safety group, which included 2520 subjects.

Inclusion Criteria:

• The elderly aged 60 and above;
• The subjects and/or guardians can understand and voluntarily sign the informed consent form;
• Proven legal identity.

Exclusion Criteria:

• Received any circulating seasonal influenza vaccine prior to enrollment;
• Have received any pneumococcal vaccine within 5 years;
• History of severe allergic reactions to vaccines (such as acute anaphylaxis, angioneurotic edema, dyspnea, etc.);
• History of uncontrolled epilepsy and other serious neurological disorders (e.g.transverse myelitis, Guillain-Barre syndrome, demyelinating disease, etc.)
• Fever,acute onset of chronic disease,severe uncontrolled chronic disease or acute disease at the time of vaccination;
• Receipt of other investigational drugs in the past 30 days;
• Receipt of attenuated live vaccines in the past 14 days;
• Receipt of inactivated or subunit vaccines in the past 7 days;
• According to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.