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Safety and Efficacy of BARS13 in the Elderly
标题(英文)
Safety and Efficacy of BARS13 in the Elderly
条件
Respiratory Syncytial Virus Infections
干预
Drug: Recombinant Respiratory Syncytial Virus Vaccine (BARS13) /placebo|Drug: Recombinant Respiratory Syncytial Virus Vaccine (BARS13)|Drug: Placebo