Factbox: Milestones mark unprecedented distress en route to 500,000 U.S. pandemic deaths

FILE PHOTO: The USNS Comfort passes the Statue of Liberty as it enters New York Harbor during the outbreak of the coronavirus disease (COVID-19) in New York City, U.S., March 30, 2020. REUTERS/Andrew Kelly/File Photo

(Reuters) - Since the coronavirus came to the United States 13 months ago, COVID-19 killed at least 500,000 people, more than the military combat casualties of all the wars the country has fought since World War One.

Here are some key events since the virus was first detected on American soil: