Real-time evidence of flattening the curve. Lodi had the first Covid-19 case in Italy, and implemented a shutdown on Feb 23. Bergamo waited until March 8.
Look at the difference.

Incredible research by @drjenndowd, @melindacmills & co-authors. https://t.co/JYf1F5GnYu pic.twitter.com/iMVXBJ59Y6

— Don Moynihan (@donmoyn) March 15, 2020