本帖最后由 zhousht 于 2021-8-6 17:26 编辑 8 F' `9 h; W' k3 x% b5 {+ Q
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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. 8 i* I7 G! e8 ?% ohttps://www.theguardian.com/soci ... -system-experts-say" S: r( ~! w2 O! X+ X
Lockdown最受害的是儿童。