Figure.

Interrupted time-series analysis of short-term (A) and sustained (B) effects of cumulative first-dose COVID-19 vaccination coverage, before and after and implementation of the Protect Chicago Plus (PCP) program in Chicago zip codes, December 29, 2020, through May 1, 2021. Short-term effects analyzed PCP implementation from February 5 through March 29, 2021. Sustained effects analyzed PCP implementation from February 5 through May 1, 2021. Data sources: US Census Bureau12 and City of Chicago Data Portal.11,17,18