14 December 2021. Facing the complicated development of the Covid-19 epidemic, especially the Omicron variant, Ho Chi Minh City has made changes in its epidemic prevention strategy by paying heeds to protection of people at risk from Covid-19.https://www.sggpnews.org.vn/health/hcmc-pays-heed-to-protection-of-people-at-risk-from-covid19-96301.html