本帖最后由 zhousht 于 2021-8-6 17:26 编辑 : h# R) e$ m+ v
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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. & K% E G0 q$ k. j; _" C8 U9 Uhttps://www.theguardian.com/soci ... -system-experts-say/ S* ]0 n7 X' O( f
Lockdown最受害的是儿童。