December 1, 2019: First known patient shows symptoms of Covid-19 in Hubei, according to The Lancet.

January 1, 2020: Authorities close the Huanan seafood market.

January 28, 2020: Chinese President Xi Jinping meets with WHO Director General Tedros Adhanom Ghebreyesus in Beijing.

February 7, 2020: Li Wenliang, a Wuhan doctor targeted by police for trying to sound the alarm in December, dies of the virus.

February 14, 2020: First death from virus recorded in Europe.

March 1, 2020: China notifies the US.