Providing Expert Consultation in a World Living with COVID-19
Since COVID-19 was first identified in late 2019 in Wuhan, China, key variants have included the Alpha and Delta variants. However, by the end of 2022, most cases were Omicron, which is more transmissible but less deadly. There are multiple variants of Omicron, of which some are termed “variants of concern.” Most recently, XBB.1.5 was dominant in Western Europe, and this has increased transmissibility.
