不是年齡的問題,是接種率的問題。
疫苗出來前沒區別,區別出現在疫苗出來後。
所有跟帖:
• 這份調查統計與此壇。。 -pickshell- ♀ (109 bytes) () 10/13/2022 postreply 16:36:25
• 這份調查統計與此壇。。 -pickshell- ♀ (109 bytes) () 10/13/2022 postreply 16:36:25
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