本帖最后由 zhousht 于 2021-8-6 17:26 编辑 # Q2 D% i4 k- ]# B0 p _8 u% J& U4 e( p2 D0 [8 V7 k. p( I
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. . r, J& z: L2 fhttps://www.theguardian.com/soci ... -system-experts-say 8 k1 N0 D1 i% H. h. B; OLockdown最受害的是儿童。