HCM City to use Pfizer vaccine as second shot for people who received … stockbot 0 296 2021.09.09 01:26 http://vietnamnews.vn/society/1026734/hcm-city-to-use-pfizer-vaccine-a… + 10 https://vietnamnews.vn/rss/society.rss + 4 HCM City residents who were given the Moderna vaccine as their first injection will be inoculated with the Pfizer vaccine as their second shot.