Topic summary
Coronavirus disease 2019
Extracted from the Wikipedia article COVID-19.
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirusSARS-CoV-2. Starting in January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. In March 2020, the World Health Organization declared COVID-19 a global health emergency; they declared the end of the emergency in May 2023.