Chicago's Dastardly Definitions and Disappearing Data During the "Delta" Wave

A Windy City example of the kinds of "vaxed/unvaxed" data shenanigans that were used in many places around the world

This is a throwback/“for-the-record” post from the days when I was focused on Chicago’s so-called “breakthrough” reports. (

Norman Fenton

Martin Neil

Clare Craig

and

Mr Law, Health and Technology

’s good work on ONS data shenanigans brought it to mind.)

Here I reproduce a September 2021-March 2022 Twitter inquiry, with slight edits for clarity and style.

I will not forget how Chicago officials’ used data distortion to …