Washington State recorded the first corona virus death on Feb 29th, although I believe that was case was discovered posthumously. In the first week of March the Coronavirus ripped through a nursing home and killed multiple residents and staff. By March 7th we led the country in total number of cases, with 140. New York was a little behind us with 110. Our governor - Jay Inslee - responded quickly and forcefully, with meetings, events, and any gathering banned, bars and restaurants closed, and work from home if possible directions issued. The Seattle metro region, where virtually all of those cases have been found, clamped down successfully. One chart I saw had the average Seatllite traveling a total of 61 feet away from their residence on a daily basis, as compared to several miles before the lockdown.
Happy to say that we’re now #10 in the country in total number of cases, despite testing a higher# of people per capita than any other state. We’re at 7,000 total, while New York, which waited several weeks longer to respond to the virus, is over 100,000.
I’m not going to argue that lockdowns automatically work, b/c you obviously need to population to buy in it, but they most certainly can work.