Economic effects of the 1918 influenza pandemic from a St. Louis Fed Study (https://www.stlouisfed.org/~/media/files/pdfs/community-development/research-reports/pandemic_flu_report.pdf …)pic.twitter.com/RpzihVg6M6
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According to the st. louis fed no one was keeping economic statistics. It was a long time ago...and it was during ww1 so they had other stuff to do. The economic conclusions were basically pieced together from newspaper articles.