You’re still wrong. First listed case was 1/21/2020.
https://abcnews.go.com/Health/timeline-coronavirus-started/story?id=69435165
"Jan. 21, 2020: 1st confirmed case in the United States
A man in his 30s from Washington state, who traveled to Wuhan, is diagnosed with novel coronavirus. Japan, South Korea and Thailand also report their first cases one day prior."
Back to my original post, we still have only know about it for four months. In dealing with a new disease, that is not a lot of time.