WHO recommends new near-point-of-care diagnostic tools to combat TB

On World TB Day 2026, the World Health Organization (WHO) has announced a significant advancement in the global fight against tuberculosis (TB) by recommending new diagnostic tools designed to accelerate detection and treatment. These recommendations, detailed in updated guidelines, aim to bring TB diagnosis closer to patients, enhance accessibility, and reduce the overall cost of testing, marking a critical step towards achieving the End TB Strategy goals [2, 3, 4, 5, 8, 19]. The core of the new guidance focuses on deploying innovative diagnostic technologies that can be used near the point-of-care (NPOC). These portable, often battery-powered tests are designed for simplicity and can deliver results in under an hour, a substantial improvement over traditional methods that often require samples to be sent to centralized laboratories, leading to delays in diagnosis and treatment initiation [2, 3, 4, 8, 17]. The cost-effectiveness of these NPOC tests is also a key feature, being available at less than half the price of many existing molecular diagnostics, thereby enabling countries to expand testing access, particularly in resource-constrained settings [2, 3, 4, 5, 9, 17]. In addition to NPOC tests, the WHO now recommends the use of tongue swabs for TB testing. This innovative approach is particularly beneficial for individuals, including adults and adolescents, who have difficulty producing sputum, a common requirement for traditional TB tests. This allows for easier sample collection and expands the reach of TB testing to populations who might otherwise be missed, including those at increased risk of dying from the disease [2, 4, 8, 15, 16, 19]. Furthermore, the updated guidelines endorse sputum pooling as a diagnostic strategy. This involves combining samples from multiple individuals for a single test. The primary advantage of this method is its cost-saving potential and increased efficiency, as it can reduce commodity costs and machine time, leading to faster results, especially in areas with limited resources [2, 4, 7, 9, 16, 19]. Dr. Tedros Adhanom Ghebreyesus, WHO Director-General, described these new tools as "truly transformative" for tuberculosis control. He emphasized their potential to bring fast, accurate diagnosis closer to people, leading to saved lives, reduced transmission, and lower healthcare costs. He urged all countries to scale up access to these innovations to ensure that every person with TB can be reached and treated promptly [2, 3, 5, 9, 16, 17, 19]. The WHO's recommendations come at a crucial time, as TB remains one of the world's deadliest infectious diseases. Despite global efforts that have saved millions of lives, progress is threatened by funding cuts and persistent diagnostic gaps [4, 8, 19]. The South-East Asia region, in particular, bears a disproportionately high burden of TB, accounting for a significant percentage of global cases and deaths, with India being a major contributor [10, 11, 12, 13, 14]. The urgency to act is amplified by the fact that TB is preventable and treatable, yet remains a leading cause of death globally [4, 10, 16, 24]. Beyond TB, these new diagnostic devices also show potential for testing other diseases such as HIV, mpox, and HPV. This adaptability could support the development of more patient-centered, equitable, and integrated healthcare services, aligning with a 'one-stop-shop' approach for managing various health concerns [2, 3, 16, 19]. The WHO's push for these new tools is part of a broader call to action on World TB Day, urging countries to accelerate their efforts, strengthen people-centered care, build resilient health systems, and tackle the social and economic drivers of TB [2, 3, 19]. However, the organization also stresses that innovation alone is insufficient; sustained investment in research and development is critical, as global funding for TB research remains significantly below the estimated annual need [2, 4, 19]. For India, which carries a substantial burden of TB, these new diagnostic tools, alongside existing national strategies like the National Strategic Plan (NSP) 2020-25 and the National TB Elimination Programme (NTEP), offer renewed hope for accelerating progress towards TB elimination. The focus on early and accurate diagnosis, integrated with comprehensive treatment and preventive measures, is crucial for reaching the ambitious goals set by the Indian government and the WHO [20, 24, 26].

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