During the 1918 Spanish Flu pandemic, two US cities had very different responses to the outbreak. St Louis cancelled all events and gatherings after discovering its first cases, while Philadelphia went ahead with a military parade attended by 200,000. Philadelphia had a cumulative death rate over the period of 719/100,000. This compares to St. Louis which had a cumulative death rate of 347/100,000. The graph shows how drastically different the peak number of deaths were for the two cities. (https://bit.ly/2UCmOtk)