Earliest traceable patient, a 55-year-old man, develops symptoms of a novel coronavirus (COVID-19) in Wuhan, China.
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China announced that the Coronavirus had created the country's worst health emergency since 1949.
Japan opened its borders to tourists after two years of closure due to the COVID-19 pandemic.
The FDA authorized the first breathalyzer test that detects COVID-19.
The United States had its first official COVID-19 related death.
The Carnival in Rio de Janeiro in Brazil was canceled because of the COVID-19 pandemic.
