SARS-CoV-2 variant risk evaluation, 30 August 2023 Jan 1, 2023· World Health Organization · 0 min read URL Cite publication Last updated on Jan 1, 2023 ← New nomenclature for mpox (monkeypox) and monkeypox virus clades Mar 1, 2023 Origins and Evolution of Seasonal Human Coronaviruses Jul 1, 2022 →