0 E* T4 ?7 g, |5 ^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. ^3 j# M) G( _+ Jhttps://www.theguardian.com/soci ... -system-experts-say5 u# p: T) C ^% M @
Lockdown最受害的是儿童。