Eliminating tuberculosis one neighborhood at a time

Area of Science:

• Public Health
• Epidemiology
• Infectious Disease Control

Background:

• Tuberculosis (TB) remains a significant public health concern, particularly in high-incidence communities.
• Effective strategies are needed to reduce TB transmission and achieve elimination goals.

Purpose of the Study:

• To evaluate a community-based strategy for preventing tuberculosis (TB) in high-risk neighborhoods.
• To assess the long-term impact of targeted screening and treatment on TB incidence.

Main Methods:

• Mapped historical TB cases and tuberculin skin test (TST) reactors to identify high-incidence clusters.
• Conducted door-to-door TST screening in targeted neighborhoods.
• Provided radiography, clinical evaluation, and isoniazid preventive treatment (IPT) to TST-positive individuals.

Main Results:

• 57.1% of eligible residents were tested, with 17.7% testing positive and 147 individuals receiving IPT.
• No TB cases were reported in the targeted neighborhoods between 1996 and 2006.
• TB continued to occur in other parts of Smith County during the post-intervention period.

Conclusions:

• Active, community-based screening and IPT in high-incidence areas can effectively prevent TB.
• This targeted approach may accelerate TB elimination efforts in the United States.