Ministry issues guidance on second dose of COVID vaccine stockbot 0 105 2021.12.13 21:31 http://vietnamnews.vn/society/1106197/ministry-issues-guidance-on-seco… + 3 https://vietnamnews.vn/rss/society.rss + 0 People who have had a first vaccine dose of the Pfizer or AstraZeneca vaccine can receive Moderna for the second dose, as vaccine sources are limited, according to the latest guidance from the Ministry of Health issued on Sunday.