A Randomized, Blinded, Parallel Controlled Phase 3 Clinical Trial to Evaluate the Immunogenicity and Safety of the 23-valent Pneumococcal Polysaccharide Vaccine in Healthy People Aged 2 Years and Above
This study is a randomized, blinded, parallel controlled phase 3 clinical trial to evaluate the immunogenicity and safety of the 23-valent pneumococcal polysaccharide vaccine in healthy people aged 2 years and above.
• Healthy subjects who meet the observation age of this clinical trial (2 years old and above) and are determined based on medical history, physical examination and the researcher's judgment;
• Subjects who voluntarily participate and/or the subjects' legal guardians Or the entrusted person voluntarily agrees for his or her child to participate and signs an informed consent form (subjects aged 8-17 years old must also sign an informed notification form);
• The subject and/or the subject's legal guardian or principal can abide by the clinical Relevant requirements of the research protocol;
• \*Axillary body temperature \<37.3°C on the day of enrollment. For criteria marked with an asterisk (\*), if the subject has the conditions specified in the criterion, the visit can be rescheduled when they no longer have those conditions.