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

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