https://www.southampton.ac.uk/news/2020/03/covid-19-china.page
https://www.hindustantimes.com/india-news/delay-in-lockdown-could-have-led-to-threefold-jump-in-coronavirus-cases-in-china/story-whYZGrQ3OEmGP1tI8vpVVN.html
The research also found that if interventions in the country could have been conducted one week, two weeks, or three weeks earlier, cases could have been reduced by 66 percent, 86 percent and 95 percent respectively – significantly limiting the geographical spread of the disease. However, if NPIs were conducted one week, two weeks, or three weeks later than they were, the number of cases may have shown a 3-fold, 7-fold, or 18-fold increase, respectively.
