疫苗無效是如何肯定的?
所有跟帖:
• 打的人也得。疫苗不防疫稱為無效。是不是降低了死亡率,有爭論。 -種西瓜- ♂ (0 bytes) () 05/16/2024 postreply 12:49:40
• 打的人也得。疫苗不防疫稱為無效。是不是降低了死亡率,有爭論。 -種西瓜- ♂ (0 bytes) () 05/16/2024 postreply 12:49:40
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