Editing Century of Progress (section)

===Amoebic dysentery outbreak===
From June to November 1933, there was an outbreak of [[amoebic dysentery]] associated with the fair. There were more than a thousand cases, resulting in 98 deaths.<ref>{{cite journal |author=Markell, E.K. |title=The 1933 Chicago outbreak of amebiasis |journal=Western Journal of Medicine |volume=144 |issue=6 |pages=750 |date=June 1986| pmid=3524005 |pmc=1306777 }}</ref><ref>{{cite web|title=Water and Waste Systems|url=http://www4.ncsu.edu/~rifki/arc414/Water%20and%20Waste/WaterWaste_09.htm|archive-url=https://web.archive.org/web/20170119121357/http://www4.ncsu.edu/~rifki/arc414/Water%20and%20Waste/WaterWaste_09.htm|archive-date=January 19, 2017|url-status=dead|access-date=January 19, 2017}}</ref><ref>{{Cite web |date=August 16, 2022 |title=2022 National Backflow Prevention Day! |url=https://arbiterbackflow.com/blog/f/2022-national-backflow-prevention-day |access-date=October 1, 2023 |website=Arbiter Backflow}}</ref> Joel Connolly of the Chicago Bureau of Sanitary Engineering brought the outbreak to an end when he found that defective plumbing permitted sewage to contaminate drinking water in two hotels.