Tuberculosis (TB) disease incidence has decreased steadily since 1993 (1), a result of decades of work by local TB programs to detect, treat, and prevent TB disease and transmission. During 2020, a total of 7,163 TB cases were provisionally reported to CDC's National Tuberculosis Surveillance System (NTSS) by the 50 U.S. states and the District of Columbia (DC), a relative reduction of 20%, compared with the number of cases reported during 2019.* TB incidence per 100,000 persons was 2.2 during 2020, compared with 2.7 during 2019. Since 2010, TB incidence has decreased by an average of 2%-3% annually (1). Pandemic mitigation efforts and reduced travel might have contributed to the reported decrease. The magnitude and breadth of the decrease suggest potentially missed or delayed TB diagnoses. Health care providers should consider TB disease when evaluating patients with signs and symptoms consistent with TB (e.g., cough of >2 weeks in duration, unintentional weight loss, and hemoptysis), especially when diagnostic tests are negative for SARS-CoV-2, the virus that causes COVID-19. In addition, members of the public should be encouraged to follow up with their health care providers for any respiratory illness that persists or returns after initial treatment. The steep, unexpected decline in TB cases raises concerns of missed cases, and further work is in progress to better understand factors associated with the decline.

中文翻译：

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结核病-美国，2020年。

自1993年以来，结核病（TB）的发病率稳步下降（1），这是当地结核病计划数十年来致力于发现，治疗和预防结核病和传播的工作的结果。2020年期间，美国50个州和哥伦比亚特区向CDC的国家结核病监视系统（NTSS）临时报告了总共7,163 TB病例，与2005年期间报告的病例数相比，相对减少了20％ 2019年。* 2020年，每10万人的结核病发病率为2.2，而2019年为2.7。自2010年以来，结核病发病率每年平均下降2％-3％（1）。减轻流行病的努力和减少的旅行可能导致了报告的减少。下降的幅度和广度表明潜在的结核病诊断漏诊或延误。在评估具有与结核病相符的体征和症状的患者（例如持续咳嗽> 2周，无意识的体重减轻和咯血）的患者时，医疗保健提供者应考虑结核病，特别是当SARS-CoV-2诊断测试阴性时，导致COVID-19的病毒。此外，应鼓励公众与他们的医护人员进行跟进，以应对在初次治疗后持续存在或复发的任何呼吸道疾病。结核病病例的急剧，出乎意料的下降引发了对漏诊病例的担忧，并且正在进行进一步的工作以更好地了解与下降相关的因素。导致COVID-19的病毒。此外，应鼓励公众与他们的医护人员进行跟进，以应对在初次治疗后持续存在或复发的任何呼吸道疾病。结核病病例的急剧，出乎意料的下降引发了对漏诊病例的担忧，并且正在进行进一步的工作以更好地了解与下降相关的因素。导致COVID-19的病毒。此外，应鼓励公众与他们的医护人员进行跟进，以应对在初次治疗后持续存在或复发的任何呼吸道疾病。结核病病例的急剧，出乎意料的下降引发了对漏诊病例的担忧，并且正在进行进一步的工作以更好地了解与下降相关的因素。