本帖最后由 zhousht 于 2021-8-6 17:26 编辑 9 \: T8 U. n% H$ m/ ^) s/ V( D& R: W- ?2 O2 k; R$ f( }
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.0 l- d6 e3 H8 I) Z; g# C https://www.theguardian.com/soci ... -system-experts-say4 Y7 J# c! q1 K4 n/ I9 |2 ~# Q
Lockdown最受害的是儿童。