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Childhood MortalityPhase 4MORDORIMortNCT02047981

Mortality Reduction After Oral Azithromycin: Mortality Study

A Phase 4 study testing Azithromycin in people with Childhood Mortality, run by University of California, San Francisco at 6 sites in 5 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Our long-term goal is to more precisely define the role of mass azithromycin treatments as an intervention for reducing childhood mortality. We propose a single multi-site (multi-country), cluster-randomized trial comparing communities randomized to oral azithromycin with those randomized to placebo. Read more about this study

Who is it for?
Ages 1 month to 60 monthsHealthy volunteers can take part
Conditions the study is for
Childhood Mortality
What is being tested?
Azithromycin
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
190,238 participants
Where
6 sitesin 5 countries
Study dates
Dec 2014to Sep 2018
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 1 month to 60 months
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Communities
  • The community location in target district.
  • The community leader consents to participation in the trial
  • The community's estimated population is between 200-2,000 people.
  • The community is not in an urban area.
  • Individuals - All children aged 1-60 months (up to but not including the 5th birthday), as assessed via biannual census.

Who cannot join

  • Individuals
  • Refusal of village chief (for village inclusion), or refusal of parent or guardian (for individual inclusion)

Trial locations and contacts

6 sites in 5 countries.

6 sites in 5 countries

United States2 sites
  • Johns Hopkins University

    Baltimore, Maryland, 21205

  • UCSF Proctor Foundation

    San Francisco, California, 94143

Other trials in United States

Malawi1 site
  • College of Medicine at the University of Malawi, Blantyre

    Blantyre

Other trials in Malawi

Niger1 site
  • The Carter Center, Niger

    Niamey

Other trials in Niger

Tanzania1 site
  • Kongwa Trachoma Project

    Kongwa

Other trials in Tanzania

United Kingdom1 site
  • London School of Hygiene & Tropical Medicine

    London

Other trials in United Kingdom

About this study

Official title: Evaluating Impact of Azithromycin Mass Drug Administrations on All-cause Mortality and Antibiotic Resistance: Mortality Trial

Our long-term goal is to more precisely define the role of mass azithromycin treatments as an intervention for reducing childhood mortality. We propose a single multi-site (multi-country), cluster-randomized trial comparing communities randomized to oral azithromycin with those randomized to placebo. We hypothesize that mass azithromycin treatments will reduce childhood mortality.

Read the detailed description

We will assess childhood mortality over three years, comparing communities where children aged 1-60 months receive biannual oral azithromycin ("Azithromycin" arm) for two years, to communities where the children receive biannual oral placebo ("Control" arm) for two years. During the third year at the Niger site only, everyone will receive azithromycin.

This is a cluster-randomized trial; at each site, communities within a contiguous area of 300,000 to 600,000 individuals will be randomized to azithromycin or placebo using simple random sampling.

Niger contingency study: In the event that mass distributions of oral azithromycin are proven to reduce mortality in 1-60 month-old children, then we will treat all communities in Niger with mass azithromycin distributions to test whether the intervention continues to reduce childhood mortality after the initial 2 years of mass treatments.

Being tested
Azithromycin, Placebo
Keywords
Childhood mortality, Azithromycin, Mass treatment, Infection, Verbal Autopsy
Medical subject headings
Infections

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AzithromycinDrug

    Also called Zithromax

    Children aged 1 month to 60 months per community will be offered weight or height-based, directly observed, oral azithromycin suspension every 6 months for 2 years. In Niger during year 3, all communities will be offered azithroymcin.

  • PlaceboDrug

    Children aged 1 month to 60 months per community will be offered weight or height-based, directly observed, oral placebo every 6 months for 2 years. In Niger during year 3, all communities will be offered azithroymcin.

Study groups in NCT02047981
Study groupRoleWhat they receive
Biannual mass oral azithromycinActive comparatorComparison of childhood mortality in communities randomized to azithromycin versus communities randomized to placebo. Children aged 1 month to 60 months per community will be offered weight or height-based, directly observed, oral azithromycin suspension every 6 months for 2 years. In Niger during year 3, all communities will be offered azithroymcin.
Receives: Drug: Azithromycin
Biannual mass oral placeboPlacebo comparatorComparison of childhood mortality in communities randomized to azithromycin versus communities randomized to placebo. Children aged 1 month to 60 months per community will be offered weight or height-based, directly observed, oral placebo every 6 months for 2 years In Niger during year 3, all communities will be offered azithroymcin.
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. All-cause Mortality Rate in Children Aged 1-60 Months

    This is a single multi-site trial, with each country as a secondary analysis. Also, an interim analysis of efficacy and futility will be conducted according to a pre-specified plan in the Statistical Analysis Plan.

    Measured: 24 Months

  2. All-cause Mortality Rate in Children Aged 1-60 Months

    This was a pre-specified contingency study in Niger only in which all communities were treated with mass azithromycin during the third year of the study following the primary 24-month endpoint.

    Measured: 36 months

Secondary outcomes (5)
  1. Cause-specific Mortality Rate in Children Aged 1-60 Months, as Assessed From Verbal Autopsy (Niger Only)

    Deaths were assessed via biannual population census. A pre-specified outcome was cause of death, assessed by verbal autopsy.

    Measured: 24 Months

  2. Cost-effectiveness of Mass Azithromycin Administration, Per Averted Childhood Death

    Cost-effectiveness of Mass Azithromycin Administration, Per Averted Childhood Death during the 24 month phase

    Measured: 24 months

  3. All-cause and Cause-specific Health Clinic Visits in 1-60 Month-old Children

    We recorded clinic visits one year prior the study and during the first year of the study and collected outcomes of these visit.

    Measured: 24 months

  4. Cause-specific Mortality Rate in Children Aged 1-60 Months, as Assessed From Verbal Autopsy (Tanzania Only)

    At 6-monthly intervals a census of the communities was conducted, and for child deaths a verbal autopsy was performed to ascertain the cause using a standardized diagnostic classification. Mortality due to pneumonia or diarrhea by age group and arm are shown in the outcome measure data table below.

    Measured: 24 Months

  5. Cause-specific Mortality Rate in Children Aged 1-60 Months, as Assessed From Verbal Autopsy (Malawi Only)

    Cause-specific mortality by intention-to-treat for the four main inferred causes of death in the study area.

    Measured: 24 Months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Jan 2014 (estimated)
  2. Study startDec 2014
  3. Primary completionSep 2018
  4. Study completionSep 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
190,238 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02047981
Sponsor's protocol ID
OPP1032340-A
Acronym
MORDORIMort
Status last verified
Oct 2022
First submitted
24 Jan 2014
Last updated
8 Nov 2022
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Hinterwirth A, Chen C, Yan D, Zhong L, Zhou Z, Liu Y, Keenan J, O'Brien KS, Lebas E, Porco TC, Lietman TM, Doan T. Co-selection of genetic antibiotic resistance in Streptococcus pneumoniae after repeated azithromycin mass drug administrations in Niger. Antimicrob Agents Chemother. 2026 Feb 4;70(2):e0156225. doi: 10.1128/aac.01562-25. Epub 2025 Dec 23.

    PubMed 41432154
  • Peterson B, Arzika AM, Amza A, Maliki R, Karamba AM, Moussa M, Kemago M, Liu Z, Houpt E, Liu J, Pholwat S, Doan T, Porco TC, Keenan JD, Lietman TM, O'Brien KS. Assessment of Spillover of Antimicrobial Resistance to Untreated Children 7-12 Years Old After Mass Drug Administration of Azithromycin for Child Survival in Niger: A Secondary Analysis of the MORDOR Cluster-Randomized Trial. Clin Infect Dis. 2024 Nov 22;79(5):1136-1143. doi: 10.1093/cid/ciae267.

    PubMed 38739754
  • Arzika AM, Abdou A, Maliki R, Beido N, Kadri B, Harouna AN, Galo AN, Alio MK, Lebas E, Oldenburg CE, O'Brien KS, Chen C, Zhong L, Zhou Z, Yan D, Hinterwirth A, Keenan JD, Porco TC, Lietman TM, Doan T; MORDOR Study Group. Prolonged mass azithromycin distributions and macrolide resistance determinants among preschool children in Niger: A sub-study of a cluster-randomized trial (MORDOR). PLoS Med. 2024 May 6;21(5):e1004386. doi: 10.1371/journal.pmed.1004386. eCollection 2024 May.

    PubMed 38709718
  • Chao DL, Arzika AM, Abdou A, Maliki R, Karamba A, Galo N, Beidi D, Harouna N, Abarchi M, Root E, Mishra A, Lebas E, Arnold BF, Oldenburg CE, Keenan JD, Lietman TM, O'Brien KS. Distance to Health Centers and Effectiveness of Azithromycin Mass Administration for Children in Niger: A Secondary Analysis of the MORDOR Cluster Randomized Trial. JAMA Netw Open. 2023 Dec 1;6(12):e2346840. doi: 10.1001/jamanetworkopen.2023.46840.

    PubMed 38100110
  • Pickering H, Hart JD, Burr S, Stabler R, Maleta K, Kalua K, Bailey RL, Holland MJ. Impact of azithromycin mass drug administration on the antibiotic-resistant gut microbiome in children: a randomized, controlled trial. Gut Pathog. 2022 Jan 6;14(1):5. doi: 10.1186/s13099-021-00478-6.

    PubMed 34991704
  • Arzika AM, Maliki R, Abdou A, Mankara AK, Harouna AN, Cook C, Hinterwirth A, Worden L, Zhong L, Chen C, Ruder K, Zhou Z, Lebas E, O'Brien KS, Oldenburg CE, Le V, Arnold BF, Porco TC, Keenan JD, Lietman TM, Doan T. Gut Resistome of Preschool Children After Prolonged Mass Azithromycin Distribution: A Cluster-randomized Trial. Clin Infect Dis. 2021 Oct 5;73(7):1292-1295. doi: 10.1093/cid/ciab485.

    PubMed 34037753
  • Doan T, Worden L, Hinterwirth A, Arzika AM, Maliki R, Abdou A, Zhong L, Chen C, Cook C, Lebas E, O'Brien KS, Oldenburg CE, Chow ED, Porco TC, Lipsitch M, Keenan JD, Lietman TM. Macrolide and Nonmacrolide Resistance with Mass Azithromycin Distribution. N Engl J Med. 2020 Nov 12;383(20):1941-1950. doi: 10.1056/NEJMoa2002606.

    PubMed 33176084
  • O'Brien KS, Arzika AM, Maliki R, Manzo F, Mamkara AK, Lebas E, Cook C, Bailey RL, West SK, Oldenburg CE, Porco TC, Arnold B, Keenan JD, Lietman TM; MORDOR Study Group. Biannual azithromycin distribution and child mortality among malnourished children: A subgroup analysis of the MORDOR cluster-randomized trial in Niger. PLoS Med. 2020 Sep 15;17(9):e1003285. doi: 10.1371/journal.pmed.1003285. eCollection 2020 Sep.

    PubMed 32931496
  • Doan T, Hinterwirth A, Arzika AM, Worden L, Chen C, Zhong L, Oldenburg CE, Keenan JD, Lietman TM. Reduction of Coronavirus Burden With Mass Azithromycin Distribution. Clin Infect Dis. 2020 Nov 19;71(16):2282-2284. doi: 10.1093/cid/ciaa606.

    PubMed 32426812
  • Keenan JD, Arzika AM, Maliki R, Elh Adamou S, Ibrahim F, Kiemago M, Galo NF, Lebas E, Cook C, Vanderschelden B, Bailey RL, West SK, Porco TC, Lietman TM; MORDOR-Niger Study Group. Cause-specific mortality of children younger than 5 years in communities receiving biannual mass azithromycin treatment in Niger: verbal autopsy results from a cluster-randomised controlled trial. Lancet Glob Health. 2020 Feb;8(2):e288-e295. doi: 10.1016/S2214-109X(19)30540-6.

    PubMed 31981558
  • Bloch EM, Munoz B, Mrango Z, Weaver J, Mboera LEG, Lietman TM, Sullivan DJ Jr, West SK. The impact on malaria of biannual treatment with azithromycin in children age less than 5 years: a prospective study. Malar J. 2019 Aug 23;18(1):284. doi: 10.1186/s12936-019-2914-8.

    PubMed 31443654
  • Doan T, Arzika AM, Hinterwirth A, Maliki R, Zhong L, Cummings S, Sarkar S, Chen C, Porco TC, Keenan JD, Lietman TM; MORDOR Study Group. Macrolide Resistance in MORDOR I - A Cluster-Randomized Trial in Niger. N Engl J Med. 2019 Jun 6;380(23):2271-2273. doi: 10.1056/NEJMc1901535. No abstract available.

    PubMed 31167060
  • Keenan JD, Arzika AM, Maliki R, Boubacar N, Elh Adamou S, Moussa Ali M, Cook C, Lebas E, Lin Y, Ray KJ, O'Brien KS, Doan T, Oldenburg CE, Callahan EK, Emerson PM, Porco TC, Lietman TM. Longer-Term Assessment of Azithromycin for Reducing Childhood Mortality in Africa. N Engl J Med. 2019 Jun 6;380(23):2207-2214. doi: 10.1056/NEJMoa1817213.

    PubMed 31167050
  • Porco TC, Hart J, Arzika AM, Weaver J, Kalua K, Mrango Z, Cotter SY, Stoller NE, O'Brien KS, Fry DM, Vanderschelden B, Oldenburg CE, West SK, Bailey RL, Keenan JD, Lietman TM; Macrolides Oraux pour Reduire les Deces avec un Oeil sur la Resistance (MORDOR) Study Group. Mass Oral Azithromycin for Childhood Mortality: Timing of Death After Distribution in the MORDOR Trial. Clin Infect Dis. 2019 May 30;68(12):2114-2116. doi: 10.1093/cid/ciy973.

    PubMed 30561577
  • Keenan JD, Bailey RL, West SK, Arzika AM, Hart J, Weaver J, Kalua K, Mrango Z, Ray KJ, Cook C, Lebas E, O'Brien KS, Emerson PM, Porco TC, Lietman TM; MORDOR Study Group. Azithromycin to Reduce Childhood Mortality in Sub-Saharan Africa. N Engl J Med. 2018 Apr 26;378(17):1583-1592. doi: 10.1056/NEJMoa1715474.

    PubMed 29694816

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Azithromycin in people with Childhood Mortality, run by University of California, San Francisco at 6 sites in 5 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Nov 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 6 sites in United States, Malawi, Niger, Tanzania, United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 3 Jan 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

All-cause Mortality Rate in Children Aged 1-60 Months (time frame: 24 Months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02047981, which also lists 16 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Nov 2022.

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