<![CDATA[Background: Tuberculosis (TB) remains a significant public health concern in Madiun City, with increasing cases from 2021 to 2024. Contact investigation (CI) is a crucial strategy, yet its performance in 2024 was low: only 23.30% CI coverage (target: 90%), 32.30% bacteriological CI (target: 90%), and 17.90% clinical diagnosis (target: 30%). These gaps suggest many undetected cases, risking further transmission. Purpose: This study aims to describe the implementation of contact investigations in TB control efforts in Madiun City. Methods: A quantitative descriptive cross-sectional study using secondary data from the 2024 TB.16RK Form was conducted. The sample included 672 recorded contacts of registered index TB cases in Madiun City from January to December 2024. A total sampling technique was applied, including all eligible cases and contacts during the study period. Variables analyzed were the type of healthcare facility, the number of contacts, the CI method, the CI status, and the TB outcomes. Results: Of 672 contacts, 60.30% had not undergone CI. Hospitals contributed the highest number of uninvestigated contacts (n=212), and all contacts from correctional facilities were uninvestigated. Most index cases had <8 contacts, with a CI ratio of 1:2, which is below the WHO's 5–10 recommendation. CI was primarily via home visits (91.40%). Only 1.87% of investigated contacts were diagnosed with TB, showing CI's potential in case finding. Conclusion: CI coverage in Madiun City remains low, with suboptimal contact ratios and facility performance. Strengthening CI implementation across all health facilities is vital to interrupt transmission and achieve TB elimination by 2030.]]>
