Public health officials in Kansas are confronting a significant rise in tuberculosis cases, with new data showing the number of infections more than doubled from the previous year. The Kansas Department of Health and Environment reported 113 TB cases in 2024, a sharp increase from the 51 cases recorded in 2023.
Of the 113 cases identified last year, 68 were classified as active tuberculosis, meaning those individuals were both sick and capable of spreading the disease to others. The remaining cases were latent infections, where people carry the bacteria without currently being contagious. This outbreak is now among the largest documented in the United States since federal tracking of major outbreaks began in 2008.
The state health department has not publicly identified a source for the outbreak. TB investigations are often slow-moving because the bacteria can remain dormant in a person’s lungs for years before symptoms emerge. By the time symptoms such as coughing up blood appear, an infected person may have already transmitted the disease to family members, coworkers, or others in close quarters.
Active tuberculosis requires a demanding treatment regimen. Patients typically take a combination of four drugs for two months, followed by two drugs for an additional four months. To prevent patients from stopping treatment early and potentially breeding drug-resistant strains, health departments often assign case managers to observe patients taking every dose. This process is labor-intensive and costly for local health agencies.
The national rate for tuberculosis in 2023 was approximately 2.9 cases per 100,000 people, a historic low after decades of decline. Kansas had previously been tracking below that national average, but the 2024 figures now make the state a statistical outlier. TB outbreaks frequently cluster in specific populations, including people in homeless shelters, prison inmates, immigrants from countries with high TB rates, and individuals with compromised immune systems. None of these groups have been publicly confirmed as the center of the Kansas outbreak.
Contact tracing for tuberculosis is a painstaking process. Health workers must identify and test every person an infected patient spent time with over several months, then begin treatment if necessary. With 68 active cases, each potentially generating dozens of contacts, the workload for local health departments is enormous.
The outbreak also highlights concerns about public health funding. State health departments have faced staffing shortages for years, with the COVID-19 pandemic pulling resources and experienced workers away from other infectious disease programs. TB control programs in particular lost staff to retirement and burnout. For now, the priority remains treating the sick. The outbreak is a slow-moving public health challenge, but tuberculosis does not need to spread rapidly to cause lasting harm—it only requires a suitable host and conditions that allow it to transmit quietly.
