Peb muaj daim ntawv pov thawj CE thiab Tam sim no peb tab tom ua daim ntawv pov thawj EUA hauv Tebchaws Meskas thiab daim ntawv pov thawj ANVIES hauv Braizl, yuav tau txais daim ntawv pov thawj sai sai no, txais tos rau kev nug los ntawm peb.

Baysen kho mob tab tom muab cov khoom siv kuaj sai, suav nrog cov khoom siv kuaj covid-19. ....