pandemic COVID-19 pandemic http://purl.obolibrary.org/obo/CIDO_0000152 http://purl.obolibrary.org/obo/IDO-COVID-19_0001388 https://en.wikipedia.org/wiki/COVID-19_pandemic https://en.wikipedia.org/wiki/Category:COVID-19_pandemic https://www.wikidata.org/wiki/Q81068910 A global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identified in Wuhan, China, in December 2019; a lockdown in Wuhan and other cities in Hubei province failed to contain the outbreak, and it spread to other parts of mainland China and around the world. The World Health Organization (WHO) declared a Public Health Emergency of International Concern on 30 January 2020, and a pandemic on 11 March 2020. Since 2021, variants of the virus have emerged and become dominant in many countries, with the Delta, Alpha and Beta variants being the most virulent. COVID pandemic coronavirus pandemic