Timing of recurrence after treatment of pulmonary TB

Pulmonary TB (PTB) may recur due to reinfection or relapse after initial successful treatment. Based on microbiologically documented cases, we searched Embase, PubMed, Web of Science, and Medline for PTB recurrence. The timeframe of overall recurrences, relapse, reinfection, and risk factors were as...

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Main Authors: C.T. Mithunage, D.W. Denning
Format: Article
Language:English
Published: International Union Against Tuberculosis and Lung Disease (The Union) 2024-10-01
Series:IJTLD Open
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Online Access:https://www.ingentaconnect.com/contentone/iuatld/ijtldo/2024/00000001/00000010/art00006
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author C.T. Mithunage
D.W. Denning
author_facet C.T. Mithunage
D.W. Denning
author_sort C.T. Mithunage
collection DOAJ
description Pulmonary TB (PTB) may recur due to reinfection or relapse after initial successful treatment. Based on microbiologically documented cases, we searched Embase, PubMed, Web of Science, and Medline for PTB recurrence. The timeframe of overall recurrences, relapse, reinfection, and risk factors were assessed. We compared the time to recurrence, relapse, and reinfection from treatment completion and plotted this using Kaplan–Meier curves. This systematic review included 23 articles describing 2,153 PTB recurrences in 75,224 treated people across all continents. Genotyping data to distinguish relapse from reinfection was available for 402 recurrences. The cumulative recurrence percentage was 2.9% over 5 years, and the median time for recurrence was 18 months (95% CI 16.99–19.0). Most recurrences (93%) were in HIV-negative people. Relapse occurred earlier than reinfection at 12 months (95% CI 10.86–13.14) vs 24 months (95% CI 21.61–26.39) (P < 0.001, χ2 59.89). In low TB burden settings, recurrences were mainly caused by relapse (85%), whereas in high-burden settings, relapses comprised 56% of recurrences. Recurrences occurred slightly earlier in HIV-positive patients (P = 0.038, χ2 4.30). The emergence of resistance to one or more first-line anti-TB agents was documented in 40 of 421 cases (9.5%). Early recurrences are mainly relapses, while late recurrences are mainly reinfections.
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spelling doaj-art-e36c2259472a4cfa82be17e4bd10f77b2025-01-23T13:28:38ZengInternational Union Against Tuberculosis and Lung Disease (The Union)IJTLD Open3005-75902024-10-0111045646510.5588/ijtldopen.24.02226Timing of recurrence after treatment of pulmonary TBC.T. MithunageD.W. DenningPulmonary TB (PTB) may recur due to reinfection or relapse after initial successful treatment. Based on microbiologically documented cases, we searched Embase, PubMed, Web of Science, and Medline for PTB recurrence. The timeframe of overall recurrences, relapse, reinfection, and risk factors were assessed. We compared the time to recurrence, relapse, and reinfection from treatment completion and plotted this using Kaplan–Meier curves. This systematic review included 23 articles describing 2,153 PTB recurrences in 75,224 treated people across all continents. Genotyping data to distinguish relapse from reinfection was available for 402 recurrences. The cumulative recurrence percentage was 2.9% over 5 years, and the median time for recurrence was 18 months (95% CI 16.99–19.0). Most recurrences (93%) were in HIV-negative people. Relapse occurred earlier than reinfection at 12 months (95% CI 10.86–13.14) vs 24 months (95% CI 21.61–26.39) (P < 0.001, χ2 59.89). In low TB burden settings, recurrences were mainly caused by relapse (85%), whereas in high-burden settings, relapses comprised 56% of recurrences. Recurrences occurred slightly earlier in HIV-positive patients (P = 0.038, χ2 4.30). The emergence of resistance to one or more first-line anti-TB agents was documented in 40 of 421 cases (9.5%). Early recurrences are mainly relapses, while late recurrences are mainly reinfections.https://www.ingentaconnect.com/contentone/iuatld/ijtldo/2024/00000001/00000010/art00006bronchiectasischronic pulmonary aspergillosishivreinfectionrecurrence
spellingShingle C.T. Mithunage
D.W. Denning
Timing of recurrence after treatment of pulmonary TB
IJTLD Open
bronchiectasis
chronic pulmonary aspergillosis
hiv
reinfection
recurrence
title Timing of recurrence after treatment of pulmonary TB
title_full Timing of recurrence after treatment of pulmonary TB
title_fullStr Timing of recurrence after treatment of pulmonary TB
title_full_unstemmed Timing of recurrence after treatment of pulmonary TB
title_short Timing of recurrence after treatment of pulmonary TB
title_sort timing of recurrence after treatment of pulmonary tb
topic bronchiectasis
chronic pulmonary aspergillosis
hiv
reinfection
recurrence
url https://www.ingentaconnect.com/contentone/iuatld/ijtldo/2024/00000001/00000010/art00006
work_keys_str_mv AT ctmithunage timingofrecurrenceaftertreatmentofpulmonarytb
AT dwdenning timingofrecurrenceaftertreatmentofpulmonarytb