Southern region tightens preventive measures against COVID stockbot 0 336 2021.05.29 02:32 http://vietnamnews.vn/society/958856/southern-region-tightens-preventi… + 12 https://vietnamnews.vn/rss/society.rss + 6 The HCM City Centre for Diseases Control and Prevention said this morning that 12 more people are suspected to have contracted COVID-19.