You might have seen this chart circulating from a 2007 study of public health measures during the 1918 flu pandemic.
|The two rises for St. Louis roughly correspond|
to dates of our closure orders
"Public health interventions and epidemic intensity
during the 1918 influenza pandemic", 2007
Though the scale for Philadelphia's peak reduces the apparent variation on the line for St. Louis, St. Louis had two smaller humps, one towards the end of October, the other in mid-December.
In mid-November, schools had opened and public gatherings were permitted again. But then the rate of new flu cases started increasing again, requiring a second round of closures.
|First closure order, October 12th, 1918|
(Image at top, October 13th, 1918)
|Reopening, November 11th, 1918|
|In the society column, November 13th, 1918|
|Second closure order, December 30th, 1918|
|Afternoon paper complaint, December 30th, 1918|
|Mayor Keyes defended closure in morning paper,|
January 2nd, 1919
|The afternoon response, January 6th, 1919|
We know now that "good results" did follow
"closing public places."