本帖最后由 zhousht 于 2021-8-6 17:26 编辑 & ]# ?6 ]; K, F" J$ B
z. a7 F! z6 T
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.9 [/ \* Z6 _: H# f# M6 V- O c https://www.theguardian.com/soci ... -system-experts-say) e. g) | J X& t
Lockdown最受害的是儿童。