Health official calls for caution in vaccine authorisation stockbot 0 466 2021.06.24 17:58 http://vietnamnews.vn/society/979378/health-official-calls-for-caution… + 5 https://vietnamnews.vn/rss/society.rss + 4 The authorisation of a COVID-19 vaccine, even for emergency use, must be based on sufficient scientific data, a Ministry of Health official has said.