Vietnam Detects UK, South African Variants in Imported Cases from Cambodia 27 April 2021 VOA Khmer FILE - Vietnamese soldiers, wearing protective masks, stand guard at the National Convention Center, the venue for the 13th National Congress of the Communist Party of Vietnam during the coronavirus disease (COVID-19) outbreak in Hanoi, Vietnam, January 28, 2021. REUTERS/Kham Share share PHNOM PENH, CAMBODIA — Health authorities and state media in Vietnam said COVID-19 samples taken from imported cases from Cambodia have shown the presence of the UK and South African variants of the virus. Vietnam’s Health Ministry reported on Monday that Minister Nguyen Thanh Long was visiting the southern city of Can Tho to prepare an 800-bed field hospital in preparation for a potential cluster originating out of Cambodia, on account of illegal border crossings.