本帖最后由 zhousht 于 2021-8-6 17:26 编辑 6 ~$ g8 H5 c8 R( ] l" y7 a7 ^
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Scientists are concerned that measures to combat Covid-19 have weakened the immune systems of young children who have not been able to build up resistance to common bugs, leaving them vulnerable when mask-wearing and social distancing eventually end. ' W) P2 h) y7 r7 B; Ohttps://www.theguardian.com/soci ... -system-experts-say 8 e: ~+ }1 Q5 p) Q8 ~Lockdown最受害的是儿童。