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Guidelines on the Prevention and Control of Tuberculosis in Ireland

Guidelines on the Prevention and Control of Tuberculosis in Ireland

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<str<strong>on</strong>g>Guidel<strong>in</strong>es</str<strong>on</strong>g> <strong>on</strong> <strong>the</strong> Preventi<strong>on</strong> <strong>and</strong> C<strong>on</strong>trol <strong>of</strong> <strong>Tuberculosis</strong> <strong>in</strong> Irel<strong>and</strong> 2010HSE/HPSCKey Recommendati<strong>on</strong>s1 Epidemiology <strong>and</strong> Surveillance <strong>of</strong> TB <strong>in</strong> Irel<strong>and</strong>1.1 Case def<strong>in</strong>iti<strong>on</strong>s specified by <strong>the</strong> European Commissi<strong>on</strong> should be applied for <strong>the</strong> purposes <strong>of</strong>notificati<strong>on</strong> <strong>and</strong> submissi<strong>on</strong> <strong>of</strong> data for epidemiological surveillance <strong>and</strong> disease c<strong>on</strong>trol. These casedef<strong>in</strong>iti<strong>on</strong>s are available <strong>on</strong> <strong>the</strong> Health Protecti<strong>on</strong> Surveillance Centre (HPSC) website at www.hpsc.ie/hpsc/NotifiableDiseases/CaseDef<strong>in</strong>iti<strong>on</strong>s/ (secti<strong>on</strong> 1.4).1.2 Once a diagnosis <strong>of</strong> tuberculosis (TB) is ei<strong>the</strong>r laboratory c<strong>on</strong>firmed or str<strong>on</strong>gly suspected <strong>on</strong> cl<strong>in</strong>icalgrounds, <strong>the</strong> medical <strong>of</strong>ficer <strong>of</strong> health (MOH) should be notified by <strong>the</strong> cl<strong>in</strong>ical director <strong>of</strong> <strong>the</strong>laboratory <strong>and</strong>/or cl<strong>in</strong>ician as so<strong>on</strong> as possible <strong>and</strong> ideally at <strong>the</strong> time <strong>of</strong> diagnosis (secti<strong>on</strong> 1.5).1.3 Report<strong>in</strong>g <strong>of</strong> outbreaks <strong>of</strong> TB is a m<strong>and</strong>atory requirement (secti<strong>on</strong> 1.5).1.4 Detailed surveillance <strong>in</strong>formati<strong>on</strong> should be recorded <strong>on</strong> <strong>the</strong> nati<strong>on</strong>al tuberculosis notificati<strong>on</strong>database (NTBSS) <strong>and</strong> submitted to <strong>the</strong> Health Protecti<strong>on</strong> Surveillance Centre (HPSC). It is plannedthat TB surveillance will be <strong>in</strong>cluded <strong>in</strong> <strong>the</strong> Computerised Infectious Disease Report<strong>in</strong>g System (CIDR)(secti<strong>on</strong> 1.5).2 Methods <strong>of</strong> TB Screen<strong>in</strong>g2.1 The st<strong>and</strong>ard tubercul<strong>in</strong> sk<strong>in</strong> test (TST) recommended for use <strong>in</strong> Irel<strong>and</strong> is <strong>the</strong> Mantoux 2TU/0.1mltubercul<strong>in</strong> PPD. Mantoux 10TU/0.1/ml tubercul<strong>in</strong> PPD is not recommended for use <strong>in</strong> Irel<strong>and</strong> (secti<strong>on</strong>2.3).2.2 In all cases, <strong>the</strong> TST (Mantoux test) should be adm<strong>in</strong>istered <strong>in</strong>tradermally (secti<strong>on</strong> 2.3).2.3 The TST (Mantoux test) result should be read with<strong>in</strong> 48 to 72 hours <strong>of</strong> receiv<strong>in</strong>g <strong>the</strong> test. Thetransverse diameter <strong>of</strong> <strong>the</strong> area <strong>of</strong> <strong>in</strong>durati<strong>on</strong> (<strong>and</strong> not <strong>the</strong> ery<strong>the</strong>ma at <strong>the</strong> <strong>in</strong>jecti<strong>on</strong> site) is measuredwith a ruler <strong>and</strong> <strong>the</strong> result recorded us<strong>in</strong>g millimetres (secti<strong>on</strong> 2.3).2.4 The TST (Mantoux test) should be used as <strong>the</strong> first l<strong>in</strong>e test for <strong>the</strong> diagnosis <strong>of</strong> latent TB <strong>in</strong>fecti<strong>on</strong>(LTBI) <strong>in</strong> c<strong>on</strong>tacts <strong>of</strong> <strong>in</strong>fectious TB cases <strong>and</strong> o<strong>the</strong>rs c<strong>on</strong>sidered to be at high risk <strong>of</strong> LTBI. Those withpositive TST results should be c<strong>on</strong>sidered for Interfer<strong>on</strong> Gamma Release Assay (IGRA) test<strong>in</strong>g (secti<strong>on</strong>2.6). IGRA should be c<strong>on</strong>sidered <strong>on</strong> a case-by-case basis <strong>in</strong> adults <strong>and</strong> children as per <strong>the</strong> generalrecommendati<strong>on</strong>s <strong>in</strong> secti<strong>on</strong> 8.7.2.5 IGRA tests should not be used <strong>in</strong> <strong>the</strong> first <strong>in</strong>stance for <strong>the</strong> diagnosis <strong>of</strong> active TB disease. Appropriatemicrobiological <strong>and</strong> molecular <strong>in</strong>vestigati<strong>on</strong>s rema<strong>in</strong> <strong>the</strong> gold st<strong>and</strong>ard for <strong>the</strong> diagnosis <strong>of</strong> active TBdisease (secti<strong>on</strong> 2.6).2.6 Chest X-ray is not c<strong>on</strong>sidered <strong>the</strong> “gold st<strong>and</strong>ard” for <strong>the</strong> diagnosis <strong>of</strong> pulm<strong>on</strong>ary TB (secti<strong>on</strong> 2.8).3 Management <strong>of</strong> Latent TB Infecti<strong>on</strong>3.1 The follow<strong>in</strong>g groups should be prioritised for <strong>the</strong> treatment <strong>of</strong> LTBI: 1) Recent c<strong>on</strong>verters; 2) HIVpositive<strong>in</strong>dividuals; 3) Those aged less than 5 years; 4) Pers<strong>on</strong>s receiv<strong>in</strong>g immunosuppressive <strong>the</strong>rapye.g. Tumour Necrosis Factor-α (TNF-α) antag<strong>on</strong>ists; 5) Pers<strong>on</strong>s with evidence <strong>of</strong> old healed TBlesi<strong>on</strong>s <strong>on</strong> chest X-ray; 6) Foreign-born pers<strong>on</strong>s from countries <strong>of</strong> high TB endemnicity (≥ 40 cases<strong>of</strong> TB/100,000 populati<strong>on</strong> notified per year); 7) Homeless pers<strong>on</strong>s; 8) Intravenous drug users <strong>and</strong> 9)healthcare workers (HCWs) (secti<strong>on</strong> 3.3).-ix-

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