本帖最后由 zhousht 于 2021-8-6 17:26 编辑 4 ?8 j# _. q% ]7 C 3 \1 v7 @0 }: L0 S9 kScientists 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.7 ?9 o* k. c% m2 k& ]' l https://www.theguardian.com/soci ... -system-experts-say & T4 |. N5 Y" \* P' j9 f |" NLockdown最受害的是儿童。