Kansas Faces Largest TB Outbreak Since 1950s: Health Officials Raise Alarm

Health officials in Kansas are sounding the alarm over a significant and ongoing tuberculosis (TB) outbreak. According to data from the Kansas Department of Health and Environment (KDHE), the cases are concentrated in Wyandotte County and Johnson County, part of the greater Kansas City metro area.

To date, 67 “active” TB infections and 79 “latent,” or inactive, infections have been linked to this outbreak. In latent TB, the immune system suppresses the bacteria—Mycobacterium tuberculosis—preventing symptoms and the spread to others. However, approximately 5% to 10% of individuals with latent TB may develop active infections, particularly those with compromised immune systems due to malnutrition, smoking, diabetes, or conditions like HIV/AIDS.

Outbreak Statistics and Scale

The outbreak, which began in January 2024, has already resulted in two deaths by the end of the year. KDHE Communications Director Jill Bronaugh emphasized that this is the largest documented TB outbreak in U.S. history since formal record-keeping started in the 1950s. Prior to this, Kansas experienced a multidrug-resistant TB outbreak in 2021 that affected over a dozen people. However, there is no current information on whether the recent cases involve drug-resistant strains.

Health Department Response

The Kansas Department of Health and Environment is actively working with infected individuals to identify close contacts who may have been exposed. Testing will determine whether contacts have active or latent TB, which dictates the appropriate treatment. Local health departments will provide treatments, which typically involve multiple antibiotics taken over months, free of charge to the underinsured or uninsured.

Transmission and Symptoms

TB bacteria are transmitted through the air when an infected person coughs, sings, or speaks, releasing the bacteria from their lungs. Once inside the body, these bacteria can spread to other organs, such as the kidneys, spinal cord, or brain. Symptoms vary depending on the infection site but may include cough, coughing up blood, chest pain, weight loss, and fever.

Historical Context and Public Health Measures

Formal record-keeping of TB cases in the U.S. began in the 1950s, following the development of effective treatments and improvements in housing and nutrition. Historically, the TB vaccine was not widely adopted in the U.S. due to low infection risks. However, health authorities are emphasizing the importance of appropriate treatment for the current outbreak to prevent further transmission.