The outbreak was detected in Wuhan, China in December 2019, declared a public health emergency of international concern on January 30, 2020, and recognized as a pandemic on March 11, 2020.
Kuzuka kwa ugonjwa ilitambuliwa Wuhan, Uchina, Desemba 2019, lilitangazwa kuwa Hangaiko ya Hali ya Dharura ya Afya ya Umma wa Kimataifa tarehe 30 Januari 2020, na kutambuliwa kama janga kubwa tarehe 11 Machi 2020.