MMWR Morb Mortal Wkly Rep. 2023 Mar 24;72(12):297-303. doi: 10.15585/mmwr.mm7212a1.
Incidence of reported tuberculosis (TB) decreased gradually in the United States during 1993-2019, reaching 2.7 cases per 100,000 persons in 2019. Incidence substantially declined in 2020 to 2.2, coinciding with the COVID-19 pandemic (1). Proposed explanations for the decline include delayed or missed TB diagnoses, changes in migration and travel, and mortality among persons susceptible to TB reactivation (1). Disparities (e.g., by race and ethnicity) in TB incidence have been described (2). During 2021, TB incidence partially rebounded (to 2.4) but remained substantially below that during prepandemic years, raising concerns about ongoing delayed diagnoses (1). During 2022, the 50 U.S. states and the District of Columbia (DC) provisionally reported 8,300 TB cases to the National Tuberculosis Surveillance System. TB incidence was calculated using midyear population estimates and stratified by birth origin and by race and ethnicity. During 2022, TB incidence increased slightly to 2.5 although it remained lower than during prepandemic years.* Compared with that in 2021, TB epidemiology in 2022 was characterized by more cases among non-U.S.-born persons newly arrived in the United States; higher TB incidence among non-Hispanic American Indian or Alaska Native (AI/AN) and non-Hispanic Native Hawaiian or other Pacific Islander (NH/OPI) persons and persons aged ≤4 and 15-24 years; and slightly lower incidence among persons aged ≥65 years. TB incidence appears to be returning to prepandemic levels. TB disparities persist; addressing these disparities requires timely TB diagnosis and treatment to interrupt transmission and prevention of TB through treatment of latent TB infection (LTBI).
1993 年至 2019 年期间,美国报告的结核病(TB)发病率逐渐下降,2019 年达到每 10 万人 2.7 例。2020 年发病率大幅下降至 2.2,与 COVID-19 大流行同期(1)。发病率下降的原因包括结核病诊断延迟或漏诊、移民和旅行方式改变以及易发生结核再激活的人群死亡(1)。结核病发病率存在差异(例如,按种族和族裔划分)(2)。2021 年,结核病发病率部分反弹(至 2.4),但仍远低于大流行前年份,这引发了对持续延迟诊断的担忧(1)。2022 年,美国 50 个州和哥伦比亚特区(DC)向国家结核病监测系统临时报告了 8300 例结核病病例。使用年中人口估计值计算结核病发病率,并按出生地、种族和族裔进行分层。2022 年,结核病发病率略有上升至 2.5,尽管仍低于大流行前年份。*与 2021 年相比,2022 年结核病的流行病学特征是新抵达美国的非美国出生者的病例数增加;非西班牙裔美国印第安人或阿拉斯加原住民(AI/AN)和非西班牙裔夏威夷原住民或其他太平洋岛民(NH/OPI)以及年龄≤4 岁和 15-24 岁人群的结核病发病率较高;≥65 岁人群的发病率略低。结核病发病率似乎正在恢复到大流行前的水平。结核病的差异仍然存在;解决这些差异需要及时诊断和治疗结核病,以通过治疗潜伏性结核感染(LTBI)来阻断传播和预防结核病。