本帖最后由 zhousht 于 2021-8-6 17:26 编辑 # G5 F9 }( Y* i0 X M
! s8 c1 }. l, e* ~" A( K- V1 @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. ' r _( }& @% |4 X. W Khttps://www.theguardian.com/soci ... -system-experts-say+ | G# i# W8 t4 ^
Lockdown最受害的是儿童。