本帖最后由 zhousht 于 2021-8-6 17:26 编辑 2 D3 P0 w P0 F7 s% N) U
' G& Q# q- S9 Q; ^$ D& P, QScientists 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. / Q+ c* n# l' N1 ^# Q; Thttps://www.theguardian.com/soci ... -system-experts-say $ m3 d f* U5 G( Q5 k5 p0 yLockdown最受害的是儿童。