Jan. 6: The Centers for Disease Control and Prevention issued a travel notice for Wuhan, China.
Jan. 15: The first U.S. case is confirmed, in a man who traveled from Wuhan.
The Centers for Disease Control and Prevention opts to develop its own test instead of using the WHO's.
Jan. 30: The WHO declares global health emergency.
Jan. 31: The Trump Administration suspended entry into the U.S. for most foreign nationals who had traveled to China in the past 14 days.
The WHO reports 11,950 coronavirus cases worldwide.
Feb. 5: The CDC begins shipping its diagnostic tests to state and local health agencies.
Feb. 8: Labs report problems with the CDC’s tests.
The Food and Drug Administration allows academic labs to develop and begin testing coronavirus testing kits while reviewing pending applications.
The WHO reports 86,604 coronavirus cases worldwide.
March 9: Trump tweets: “So last year 37,000 Americans died from the common Flu. It averages between 27,000 and 70,000 per year. Nothing
March 16: Trump advises Americans to self-isolate for 15 days.
March 19: Trump signed into law an emergency coronavirus relief package for paid sick leave and free testing.
Washington, Oregon, California, Louisiana, Illinois, Ohio, New York, Massachusetts and New Jersey.
March 26: The U.S. now leads world in coronavirus cases.
March 29: Trump extends social distancing measures to April 30.
Governors say testing is still lacking in many states.
March 31: Trump warns of the potential for 100,000 to 240,000 deaths.