Key milestones in the COVID-19 pandemic have shaped the course of history:
December 12, 2019: Reports surface regarding an unusual pneumonia outbreak in Wuhan, China.
December 31, 2019: The World Health Organization (WHO) receives notifications about pneumonia cases in Wuhan.
January 7, 2020: Chinese public health officials confirm the identification of a novel coronavirus.
January 11, 2020: The first death related to the virus is reported in China.
January 13, 2020: Thailand confirms its first case, marking the first instance of the virus outside China.
January 20, 2020: The United States reports its initial case of the coronavirus.