本帖最后由 zhousht 于 2021-8-6 17:26 编辑 , }1 S3 ^- g" S4 Z) \6 E
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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.' B/ H6 ^1 n! M https://www.theguardian.com/soci ... -system-experts-say - h* d- |$ q p* uLockdown最受害的是儿童。