Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial

Introduction Acute lower respiratory infections (ALRIs) remain the leading causes of repeated hospitalisations among young disadvantaged Australian and New Zealand First Nations and Timorese children. Severe (hospitalised) and recurrent ALRIs in the first years of life are associated with future chr...

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Main Authors: Anne B Chang, Keith Grimwood, Yuejen Zhao, Gabrielle B McCallum, Catherine A Byrnes, Heidi Smith-Vaughan, Peter S Morris, Christine Connors, Adrian Trenholme, Shirley Lawrence, Joshua Francis, Kobi L Schutz, Mark D Chatfield, Nevio Sarmento, Robyn L. Marsh, Emily R Bowden, Nicholas Fancourt, Adriano Vieira, Kim M Hare, Dennis Bonney, Felicity Marwick, Bronwyn Karvonen, Carolyn Maclennan, Milena Santos Lay, Endang Soares da Silva
Format: Article
Language:English
Published: BMJ Publishing Group 2025-02-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/15/2/e097455.full
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author Anne B Chang
Keith Grimwood
Yuejen Zhao
Gabrielle B McCallum
Catherine A Byrnes
Heidi Smith-Vaughan
Peter S Morris
Christine Connors
Adrian Trenholme
Shirley Lawrence
Joshua Francis
Kobi L Schutz
Mark D Chatfield
Nevio Sarmento
Robyn L. Marsh
Emily R Bowden
Nicholas Fancourt
Adriano Vieira
Kim M Hare
Dennis Bonney
Felicity Marwick
Bronwyn Karvonen
Carolyn Maclennan
Milena Santos Lay
Endang Soares da Silva
author_facet Anne B Chang
Keith Grimwood
Yuejen Zhao
Gabrielle B McCallum
Catherine A Byrnes
Heidi Smith-Vaughan
Peter S Morris
Christine Connors
Adrian Trenholme
Shirley Lawrence
Joshua Francis
Kobi L Schutz
Mark D Chatfield
Nevio Sarmento
Robyn L. Marsh
Emily R Bowden
Nicholas Fancourt
Adriano Vieira
Kim M Hare
Dennis Bonney
Felicity Marwick
Bronwyn Karvonen
Carolyn Maclennan
Milena Santos Lay
Endang Soares da Silva
author_sort Anne B Chang
collection DOAJ
description Introduction Acute lower respiratory infections (ALRIs) remain the leading causes of repeated hospitalisations among young disadvantaged Australian and New Zealand First Nations and Timorese children. Severe (hospitalised) and recurrent ALRIs in the first years of life are associated with future chronic lung diseases (eg, bronchiectasis) and impaired lung function. Despite the high burden and long-term consequences of severe ALRIs, clinical, evidence-based and feasible interventions (other than vaccine programmes) that reduce ALRI hospitalisations in children are limited. This randomised controlled trial (RCT) will address this unmet need by trialling a commonly prescribed macrolide antibiotic (azithromycin) for 6–12 months. Long-term azithromycin was chosen as it reduces ALRI rates by 50% in Australian and New Zealand First Nations children with chronic suppurative lung disease or bronchiectasis. The aim of this multicentre, international, double-blind, placebo-containing RCT is to determine whether 6–12 months of weekly azithromycin administered to Australian and New Zealand First Nations and Timorese children after their hospitalisation with an ALRI reduces subsequent ALRIs compared with placebo. Our primary hypothesis is that children receiving long-term azithromycin will have fewer medically attended ALRIs over the intervention period than those receiving placebo.Methods and analysis We will recruit 160 Australian and New Zealand First Nations and Timorese children aged <2 years to a parallel, superiority RCT across four hospitals from three countries (Australia, New Zealand and Timor-Leste). The primary outcome is the rate of medically attended ALRIs during the intervention period. The secondary outcomes are the rates and proportions of children with ALRI-related hospitalisation, chronic symptoms/signs suggestive of underlying chronic suppurative lung disease or bronchiectasis, serious adverse events, and antimicrobial resistance in the upper airways, and cost-effectiveness analyses.Ethics and dissemination The Human Research Ethics Committees of the Northern Territory Department of Health and Menzies School of Health Research (Australia), Health and Disability Ethics Committee (New Zealand) and the Institute National of Health-Research Technical Committee (Timor-Leste) approved this study. The study outcomes will be disseminated to academic and medical communities via international peer-reviewed journals and conference presentations, and findings reported to health departments and consumer-based health organisations.Clinical trial registration Australia New Zealand Clinical Trial Registry ACTRN12619000456156.
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spelling doaj-art-bbfa6ff621724786964fb182fd0f3c472025-02-06T03:00:14ZengBMJ Publishing GroupBMJ Open2044-60552025-02-0115210.1136/bmjopen-2024-097455Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trialAnne B Chang0Keith Grimwood1Yuejen Zhao2Gabrielle B McCallum3Catherine A Byrnes4Heidi Smith-Vaughan5Peter S Morris6Christine Connors7Adrian Trenholme8Shirley Lawrence9Joshua Francis10Kobi L Schutz11Mark D Chatfield12Nevio Sarmento13Robyn L. Marsh14Emily R Bowden15Nicholas Fancourt16Adriano Vieira17Kim M Hare18Dennis Bonney19Felicity Marwick20Bronwyn Karvonen21Carolyn Maclennan22Milena Santos Lay23Endang Soares da Silva24The Australian Centre for Health Services Innovations, Queensland University of Technology, Brisbane, Queensland, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaHealth Statistics and Informatics, Northern Territory Department of Health, Casuarina, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaDepartment of Pediatrics, Starship Children`s Health, Auckland, Auckland, New ZealandChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaTop End Health Services, Northern Territory Department of Health, Casuarina, Northern Territory, AustraliaDepartment of Paediatrics, Middlemore Hospital, Auckland, Auckland, New ZealandDepartment of Paediatrics, Middlemore Hospital, Auckland, Auckland, New ZealandGlobal and Tropical Health, Menzies School of Health Research, Casuarina, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaGlobal and Tropical Health, Menzies School of Health Research, Casuarina, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaNorthern Territory Department of Health, Casuarina, Northern Territory, AustraliaSchool Nurse, St Francis of the Fields Primary School, Strathfieldsaye, Victoria, AustraliaChild and Maternal Health, Menzies School of Health Research, Darwin, Northern Territory, AustraliaDepartment of Paediatrics, Guido Valadares National Hospital, Dili, Timor-LestePartnership for Human Development, Dili, Timor-LesteIntroduction Acute lower respiratory infections (ALRIs) remain the leading causes of repeated hospitalisations among young disadvantaged Australian and New Zealand First Nations and Timorese children. Severe (hospitalised) and recurrent ALRIs in the first years of life are associated with future chronic lung diseases (eg, bronchiectasis) and impaired lung function. Despite the high burden and long-term consequences of severe ALRIs, clinical, evidence-based and feasible interventions (other than vaccine programmes) that reduce ALRI hospitalisations in children are limited. This randomised controlled trial (RCT) will address this unmet need by trialling a commonly prescribed macrolide antibiotic (azithromycin) for 6–12 months. Long-term azithromycin was chosen as it reduces ALRI rates by 50% in Australian and New Zealand First Nations children with chronic suppurative lung disease or bronchiectasis. The aim of this multicentre, international, double-blind, placebo-containing RCT is to determine whether 6–12 months of weekly azithromycin administered to Australian and New Zealand First Nations and Timorese children after their hospitalisation with an ALRI reduces subsequent ALRIs compared with placebo. Our primary hypothesis is that children receiving long-term azithromycin will have fewer medically attended ALRIs over the intervention period than those receiving placebo.Methods and analysis We will recruit 160 Australian and New Zealand First Nations and Timorese children aged <2 years to a parallel, superiority RCT across four hospitals from three countries (Australia, New Zealand and Timor-Leste). The primary outcome is the rate of medically attended ALRIs during the intervention period. The secondary outcomes are the rates and proportions of children with ALRI-related hospitalisation, chronic symptoms/signs suggestive of underlying chronic suppurative lung disease or bronchiectasis, serious adverse events, and antimicrobial resistance in the upper airways, and cost-effectiveness analyses.Ethics and dissemination The Human Research Ethics Committees of the Northern Territory Department of Health and Menzies School of Health Research (Australia), Health and Disability Ethics Committee (New Zealand) and the Institute National of Health-Research Technical Committee (Timor-Leste) approved this study. The study outcomes will be disseminated to academic and medical communities via international peer-reviewed journals and conference presentations, and findings reported to health departments and consumer-based health organisations.Clinical trial registration Australia New Zealand Clinical Trial Registry ACTRN12619000456156.https://bmjopen.bmj.com/content/15/2/e097455.full
spellingShingle Anne B Chang
Keith Grimwood
Yuejen Zhao
Gabrielle B McCallum
Catherine A Byrnes
Heidi Smith-Vaughan
Peter S Morris
Christine Connors
Adrian Trenholme
Shirley Lawrence
Joshua Francis
Kobi L Schutz
Mark D Chatfield
Nevio Sarmento
Robyn L. Marsh
Emily R Bowden
Nicholas Fancourt
Adriano Vieira
Kim M Hare
Dennis Bonney
Felicity Marwick
Bronwyn Karvonen
Carolyn Maclennan
Milena Santos Lay
Endang Soares da Silva
Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial
BMJ Open
title Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial
title_full Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial
title_fullStr Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial
title_full_unstemmed Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial
title_short Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, international, double-blind, randomised controlled trial
title_sort azithromycin to prevent acute lower respiratory infections among australian and new zealand first nations and timorese children petal trial study protocol for a multicentre international double blind randomised controlled trial
url https://bmjopen.bmj.com/content/15/2/e097455.full
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