Tuberculosis — the airborne bacterial infection that was once the leading cause of death in the Western world and that three decades of public health investment had driven to record lows in the United States — is coming back. It is coming back in Chicago. It is coming back in Illinois. And it is coming back across the country with a combination of causes that are as much political as they are biological. According to data from the Illinois Department of Public Health, there were 353 active tuberculosis cases confirmed in Illinois in 2023. Of those, 154 were in the city of Chicago — fully 44% of all statewide cases concentrated in one urban center. The TB rate per 100,000 Illinois residents rose from 2.4 in 2022 to 2.75 in 2023. Nationally, active TB infections rose 15% from 2022 and reached their highest level since 2013. These are not small statistical fluctuations. They are a trend line that has been pointing upward for three years, and experts are not optimistic that it will reverse on its own.
To understand why Chicago is at the center of this resurgence, it is necessary to understand the specific mechanisms driving the national TB rebound — and how Chicago's particular combination of policy decisions and population dynamics has amplified all of them simultaneously. The most fundamental driver is what infectious disease specialists call the "rebound effect." Dr. Renuga Vivekanandan, professor at Creighton University School of Medicine and vice president and chief medical officer of CHI Health Physician Enterprise Midwest, explained the mechanism directly in a statement to Fox News Digital: "The COVID-19 pandemic effectively disrupted TB surveillance and treatment programs across the country. What we're seeing now is largely a rebound effect — latent TB infections that went undetected or untreated during the pandemic are now activating."
