本帖最后由 zhousht 于 2021-8-6 17:26 编辑 8 R w6 B7 x+ R( y+ m9 o! O# R3 ~- g: p. b5 O- S
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. % a V3 u1 ?3 t% k! Rhttps://www.theguardian.com/soci ... -system-experts-say/ T# l/ t0 A' ?7 }1 q
Lockdown最受害的是儿童。