Screening for Latent Tuberculosis Infection in Adults

Abstract

Background: The literature surrounding the screening for latent tuberculosis infection (LTBI) has evolved significantly over the years, reflecting advances in diagnostic methodologies and an increasing understanding of the condition's complexities. Literature Review: (C. Kahwati et al., 2016) conduct a systematic review assessing the benefits and harms of LTBI screening, concluding that while both TST and interferon-gamma release assays (IGRAs) show moderate sensitivity and high specificity in low TB burden countries, a lack of direct comparisons between screening and no screening persists. (W. Uzorka et al., 2020) focus on practical aspects of LTBI management in primary care, advocating for IGRA testing over TST, particularly for BCG-vaccinated individuals. They highlight barriers to follow-up care in college students diagnosed with LTBI, suggesting that systematic communication strategies could enhance adherence to treatment protocols. (De Oyarzabal et al., 2019) delve into the immunological responses during LTBI treatment with isoniazid, revealing complexities in immune responses and discrepancies between TST and IGRA results. Their research underscores the necessity for tailored treatment approaches based on individual risk factors. (W. Uzorka et al., 2020) provide a retrospective analysis of diagnostic trends, noting a significant decline in TST usage and an increase in QFT application over a 17-year period. This shift reflects evolving clinical practices aimed at reducing active TB incidence among high-risk patients. Conclusion: Collectively, these articles illuminate the multifaceted landscape of LTBI screening and management, showcasing advancements in diagnostic technologies while addressing persistent challenges in diverse populations. The evolution of screening practices, the importance of tailored approaches for high-risk groups, and the need for ongoing research into effective diagnostic tools and treatment regimens are critical for improving public health outcomes related to tuberculosis.