Lockdown measures helped reduce the number of #COVID19 cases around the world, according to a new study. Findings in BMJ are based on data from 149 countries. Some nations ordered lockdowns within a few days of 1st cases. Others, like the US, took 40 days https://t.co/nrIla4a5c6 pic.twitter.com/2ev5EBSPZT

— delthia ricks 🔬 (@DelthiaRicks) July 16, 2020