Entertainment Vietnam to mix Moderna and Pfizer-BioNTech COVID-19 vaccines By qatar day - September 8, 2021 0 332 Facebook Twitter Pinterest WhatsApp Vietnam to mix Moderna and Pfizer-BioNTech COVID-19 vaccines – media – September 08, 2021 Vials of coronavirus disease (COVID-19) vaccines of Pfizer-BioNTech and Moderna are seen in the town of Ricany near Prague, Czech Republic, February 25, 2021…