Việt Nam has 400,000 Pfizer COVID-19 vaccine doses reserved for high-r… stockbot 0 25 2023.12.20 22:40 https://vietnamnews.vn/society/1638312/viet-nam-has-400-000-pfizer-cov… + 4 https://vietnamnews.vn/rss/society.rss + 5 Based on professional recommendations, individuals in high-risk groups such as healthcare workers, people with underlying conditions, and those with chronic diseases should receive a fourth dose.