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A sound comparative immunogenicity study in a vulnerable population showing equivalent responses between two widely used vaccines, but limited by cross-sectional design, surrogate endpoints, and lack of clinical outcome data.
Network meta-analysis of 17 trials confirms differential serotype-specific immunogenicity between higher-valent pneumococcal vaccines, with PCV15 showing mostly superior responses.
Phase 1/2 trial demonstrating that AS03-adjuvanted H5N8 vaccine met FDA immunogenicity criteria with acceptable safety in adults, but lacks efficacy data and comparative effectiveness evidence needed for practice-changing claims.