Pfizer hais tias peb txhaj tshuaj tiv thaiv kab mob qis ua kom muaj 'kev tiv thaiv tsis zoo' hauv cov menyuam yaus hnub nyoog qis dua 5 xyoos

Topline Pfizer thiab BioNTech hnub Monday tau hais tias lawv yuav thov Lub Chaw Tswj Xyuas Khoom Noj thiab Tshuaj Tso Cai tso cai rau peb qhov kev txhaj tshuaj ntawm lawv cov tshuaj tiv thaiv Covid-19 rau cov menyuam yaus hnub nyoog qis dua tsib xyoos suav nrog kev cog lus kho mob ...