31 January 2022. Cambodia has detected its first four cases of the highly-infectious and stealth-like BA.2 sub-variant, as Omicrom infections spike. Ministry of Health spokesman said that the four cases, all imported.https://www.khmertimeskh.com/501015757/ba-2-sneaks-in-omicron-stealth-sub-variant-found-in-four-imported-cases/