Topline Rochelle Walensky, tus thawj coj ntawm Lub Chaw Tiv Thaiv Kab Mob thiab Tiv Thaiv, kos npe tawm ntawm Moderna thiab Pfizer / BioNTech's kho Covid-19 koob tshuaj txhaj tshuaj tiv thaiv kab mob omicron var...
Topline Rochelle Walensky, tus thawj coj ntawm Lub Chaw Tiv Thaiv Kab Mob thiab Tiv Thaiv, kos npe tawm ntawm Moderna thiab Pfizer / BioNTech's kho Covid-19 koob tshuaj txhaj tshuaj tiv thaiv kab mob omicron var...