本帖最后由 zhousht 于 2021-8-6 17:26 编辑 # o0 p* T/ [: m; B/ u
/ K. \ V1 ?; b. d3 Y8 PScientists 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. / l% r2 B# {' ?# e) F" lhttps://www.theguardian.com/soci ... -system-experts-say o4 d x1 m2 u8 W3 f% CLockdown最受害的是儿童。