Transmission events revealed in tuberculosis contact investigations in London.

Transmission events revealed in tuberculosis contact investigations in London.
复制标题

DOI:
10.1038/s41598-018-25149-6
复制
发表时间:
2018-04-27
期刊:
影响因子:
4.6
通讯作者:
Anderson C
Anderson C
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Cavany SM;Vynnycky E;Sumner T;Macdonald N;Thomas HL;White J;White RG;Maguire H;Anderson C

文献摘要

参考文献

被引文献

相似文献

接触者追踪是结核病预防和护理的一个关键部分,旨在加快诊断和防止传播。最近发生传播的病例-接触者对的比例以及索引病例与其接触者获得护理之间的典型时间跨度尚不清楚;我们的目的是计算这些。我们分析了从2011年1月20日至2015年12月31日在伦敦收集的个人水平的结核病接触者追踪数据,这些数据与结核病监测和MIRU-VNTR 24位点菌株分型信息有关。在被诊断为活动性结核病的指示病例和接触者中,85/314(27%)的菌株分型数据可用于两者。在这些对中,79%(67/85)共享不可区分的分离株,这意味着可能最近的传播。在接触者和指示病例均具有社会风险因素的配对中,11/11(100%)共享难以区分的分离株,而在两者均不具有社会风险因素的配对中,这一比例为55/75(75%)(P = 0.06)。索引病例与其接触者获得护理之间的中位时间间隔为42天(IQR:16,96)。由于超过20%的配对病例可能不涉及指示病例与接触者之间的近期传播,因此接触者追踪的有效性不一定限于指示病例将疾病传播给其密切接触者的情况。
Contact tracing is a key part of tuberculosis prevention and care, aiming to hasten diagnosis and prevent transmission. The proportion of case-contact pairs for which recent transmission occurred and the typical timespans between the index case and their contact accessing care are not known; we aimed to calculate these. We analysed individual-level TB contact tracing data, collected in London from 20/01/2011-31/12/2015, linked to tuberculosis surveillance and MIRU-VNTR 24-locus strain-typing information. Of pairs of index cases and contacts diagnosed with active tuberculosis, 85/314 (27%) had strain typing data available for both. Of these pairs, 79% (67/85) shared indistinguishable isolates, implying probable recent transmission. Of pairs in which both contact and the index case had a social risk factor, 11/11 (100%) shared indistinguishable isolates, compared to 55/75 (75%) of pairs in which neither had a social risk factor (P = 0.06). The median time interval between the index case and their contact accessing care was 42 days (IQR: 16, 96). As over 20% of pairs did probably not involve recent transmission between index case and contact, the effectiveness of contact tracing is not necessarily limited to those circumstances where the index case has transmitted disease to their close contacts.
DOI: 10.1136/thoraxjnl-2016-209677
发表时间: 2017-08
期刊: Thorax
影响因子: 10
作者:
Cavany SM;Sumner T;Vynnycky E;Flach C;White RG;Thomas HL;Maguire H;Anderson C
通讯作者: Anderson C
DOI: 10.1371/journal.pone.0136179
发表时间: 2015
期刊: PloS one
影响因子: 3.7
作者:
Aldridge RW;Shaji K;Hayward AC;Abubakar I
通讯作者: Abubakar I
DOI: 10.1186/s12916-017-0864-y
发表时间: 2017-06-13
期刊: BMC medicine
影响因子: 9.3
作者:
Lalor MK;Anderson LF;Hamblion EL;Burkitt A;Davidson JA;Maguire H;Abubakar I;Thomas HL
通讯作者: Thomas HL
DOI: 10.1136/thoraxjnl-2013-203751
发表时间: 2014-02-01
期刊: THORAX
影响因子: 10
作者:
Anderson, Charlotte;White, Jacqueline;Dart, Susan
通讯作者: Dart, Susan
DOI: 10.1136/thoraxjnl-2014-206608
发表时间: 2016-08
期刊: Thorax
影响因子: 10
作者:
Hamblion EL;Le Menach A;Anderson LF;Lalor MK;Brown T;Abubakar I;Anderson C;Maguire H;Anderson SR;Public Health England Strain Typing Project Board
通讯作者: Public Health England Strain Typing Project Board