Pfizer vaccine batches usable three months after imprinted expiry date… stockbot 0 118 2021.12.01 22:21 http://vietnamnews.vn/society/1089899/pfizer-vaccine-batches-usable-th… + 13 https://vietnamnews.vn/rss/society.rss + 7 The Vietnamese health ministry has reassured the public over the quality of two Pfizer/BioNTech COVID-19 vaccine batches that have been greenlit for use in three months beyond its expiry date on the packaging.