本帖最后由 zhousht 于 2021-8-6 17:26 编辑 1 j/ L. r# S7 [1 M* c9 W& x
5 {0 [& _0 m# K- X2 \" B' WScientists 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.( j0 X3 U7 _8 _3 a https://www.theguardian.com/soci ... -system-experts-say! x8 Y- T- m1 v4 }/ n7 E+ r, g0 B, H
Lockdown最受害的是儿童。