本帖最后由 zhousht 于 2021-8-6 17:26 编辑 7 c; X6 N7 T; _! P8 B) f, l9 S5 U
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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. & A! p% G2 p" C8 R) J/ D9 Shttps://www.theguardian.com/soci ... -system-experts-say 9 O* t6 A1 Z5 n4 Y+ ]# k1 DLockdown最受害的是儿童。