China identified a new virus that had infected dozens of people in Asia
The World Health Organization declared a global health emergency.
Lockdowns and restrictions have been imposed worldwide
Attempts to open the borders and ease restrictions have begun.
Worldwide, lockdowns were reimposed for a second time.
The C.D.C. began developing plans to distribute a coronavirus vaccine.
Global death toll reached 1 million.
Trump, the USA President, tested positive for the virus.
The 2nd and 3rd rounds of lockdowns were reimposed.
Pfizer and Moderna received F.D.A. approval for their vaccine