非结核分枝杆菌(NTM)是指除结核分枝杆菌复合体和麻风分枝杆菌以外的分枝杆菌属细菌,普遍存在于自然环境中,可在免疫功能低下和免疫功能正常的宿主中引起疾病[1]。NTM可累及肺部、淋巴结、皮肤软组织、骨骼等多个器官系统,也可引起播散性感染[2][3]。
疾病概览
细菌性非结核分枝杆菌感染
Non-tuberculous mycobacterial infection
非结核分枝杆菌(NTM)广泛存在于自然环境中,但NTM疾病相对罕见。NTM的致病性通常弱于结核分枝杆菌,但可在免疫功能低下和免疫功能正常的宿主中引起疾病。除M. abscessus在囊性纤维化患者中可能发生人际传播外,人际传播通常不会发生。肺部是最常见的受累器官,NTM肺部疾病(NTM-PD)常见于已有肺部疾病的患者。NTM也可表现为局部疾病,影响淋巴结、皮肤和软组织等肺外部位,极少数累及骨骼。播散性NTM病较为罕见,主要发生在HIV/AIDS等先天性或获得性免疫缺陷患者中。快速分子检测已可用于NTM的种和亚种水平鉴定[1][2][3]。
阅读完整临床与流行病学资料6
非结核分枝杆菌(NTM)临床表现多样,可累及肺、淋巴结、皮肤软组织及骨骼等多个器官系统[1][3]。肺部是最常见的受累器官,NTM肺病(NTM-PD)常见于已有肺部基础疾病的患者,典型表现为慢性咳嗽、咳痰及反复急性加重[1]。皮肤软组织感染表现为淋巴结炎(如儿童的颈部和纵隔淋巴结炎),播散性疾病则较罕见,主要发生于先天性或获得性免疫缺陷人群,如HIV/AIDS患者[1][3]。值得注意的是,播散性NTM感染与多种遗传性免疫缺陷相关,包括IL12B、IL12RB1、ISG15、IFNGR1、IFNGR2、STAT1、IRF8等常染色体突变以及IKBKG、CYBB等X连锁突变;GATA2缺陷和抗干扰素γ自身抗体也可导致播散性感染,通常在童年后期或成年期发病[3]。此外,在无明确免疫功能障碍的人群中,孤立性肺NTM感染的发病率也在不断上升[3]。
孤立性肺部NTM感染在无明确免疫功能障碍的人群中呈上升趋势,成为日益常见的临床问题。NTM疾病的发病率和流行特征因地区、人群及NTM种类的不同而存在差异。环境中NTM的分布、宿主易感性因素以及临床诊断能力的提高均影响疾病报告的流行病学模式[3]。
NTM主要通过环境暴露途径传播,包括接触被污染的水源、土壤或气溶胶颗粒。与结核病不同,NTM一般不发生人际传播。然而,已有证据表明M. abscessus可在囊性纤维化患者之间发生传播[1]。
NTM肺部疾病的治疗决策需谨慎,治疗通常持续至痰培养转阴后12个月。额外的支持性措施包括肺康复训练和营养不良的纠正。对于由较少见的NTM种(如M. chelonae、M. fortuitum、M. malmoense等)引起的肺病,由于相关研究证据质量极低,治疗建议主要基于病例报告和病例系列的结构化专家共识[2]。
- 1Sharma SK et al. Epidemiology, diagnosis & treatment of non-tuberculous mycobacterial diseases. Indian J Med Res. 2020 Sep. PMID: 33107481. doi: 10.4103/ijmr.IJMR_902_20.PubMed: https://pubmed.ncbi.nlm.nih.gov/33107481/
- 2Lange C et al. Consensus management recommendations for less common non-tuberculous mycobacterial pulmonary diseases. Lancet Infect Dis. 2022 Jul. PMID: 35090639. doi: 10.1016/S1473-3099(21)00586-7.PubMed: https://pubmed.ncbi.nlm.nih.gov/35090639/
- 3Wu UI et al. Host susceptibility to non-tuberculous mycobacterial infections. Lancet Infect Dis. 2015 Aug. PMID: 26049967. doi: 10.1016/S1473-3099(15)00089-4.PubMed: https://pubmed.ncbi.nlm.nih.gov/26049967/
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Australia NINDSS
Australia
Australian national notifiable diseases surveillance dashboard.
Australia NINDSS — Australian Capital Territory
Australian Capital Territory, Australia
Australian NINDSS monthly state/territory notifications for Australian Capital Territory, kept separate from the Australia national aggregate.
Australia NINDSS — New South Wales
New South Wales, Australia
Australian NINDSS monthly state/territory notifications for New South Wales, kept separate from the Australia national aggregate.
Australia NINDSS — Northern Territory
Northern Territory, Australia
Australian NINDSS monthly state/territory notifications for Northern Territory, kept separate from the Australia national aggregate.
Australia NINDSS — Queensland
Queensland, Australia
Australian NINDSS monthly state/territory notifications for Queensland, kept separate from the Australia national aggregate.
Australia NINDSS — South Australia
South Australia, Australia
Australian NINDSS monthly state/territory notifications for South Australia, kept separate from the Australia national aggregate.
Australia NINDSS — Tasmania
Tasmania, Australia
Australian NINDSS monthly state/territory notifications for Tasmania, kept separate from the Australia national aggregate.
Australia NINDSS — Victoria
Victoria, Australia
Australian NINDSS monthly state/territory notifications for Victoria, kept separate from the Australia national aggregate.
Australia NINDSS — Western Australia
Western Australia, Australia
Australian NINDSS monthly state/territory notifications for Western Australia, kept separate from the Australia national aggregate.
Finland THL Infectious Diseases Register
Finland
Finland THL Infectious Diseases Register national monthly case counts. The current month is ingested as provisional and the latest three months are refreshed for source revisions.