"Kev kis tau ntawm Omicron, qhov sib txawv ntawm tus kabmob tshiab, tau nce 37.5%, piv rau Delta variant.” Lub Kaum Ib Hlis 29th, raws li tsab ntawv ceeb toom los ntawm Suav Tebchaws Kev Lag Luam Txhua Hnub, pab pawg tshawb fawb los ntawm Nankai University, los ntawm cov ntaub ntawv loj mo ...
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