21 December 2021. The Cambodia Ministry of Health yesterday issued a notification on the administering of the booster r third dose of the COVID-19 vaccine to adolescents aged 12 to 18 from January 3, 2022 (start in Phnom Penh, Kandal, Sihanoukville, Koh Kong).https://www.khmertimeskh.com/50992224/the-ministry-of-health-announces-administering-of-booster-dose-or-the-third-dose-of-covid-19-vaccine-to-children-and-adolescents-from-12-to-under-18/