Trial reportThe New England journal of medicine2020
Macrolide and Nonmacrolide Resistance with Mass Azithromycin Distribution.
Trial report in The New England journal of medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 115 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Evaluating Impact of Azithromycin Mass Drug Administrations on All-cause Mortality and Antibiotic Resistance: Mortality Trial
Azithromycine Pour la Vie Des Enfants au Niger II
Who cites it
115 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Efficacy and safety of traditional Chinese medicine combined with azithromycin sequential therapy forFrontiers in pharmacology · 2024Pooled it
- Impact of antibiotics on gut microbiome composition and resistome in the first years of life in low- to middle-income countries: A systematic review.PLoS medicine · 2023Pooled it
- Pooled it
- Clinical efficacy of Azithromycin for COVID-19 management: A systematic meta-analysis of meta-analyses.Heart & lung : the journal of critical carePooled it
- The efficacy of a single dose of oral azithromycin in labour to prevent infections in infants and birthing parents in Fiji: secondary outcomes from a randomised controlled trial.BMJ global health · 2026Trial
- Mass azithromycin distribution and antibiotic resistance in the gut and nasopharynx: a cluster-randomized trial.Nature medicine · 2026Trial
- Integration of azithromycin mass administration to 1-11-month-old children into an existing health platform to reduce child mortality: a cluster-randomised trial in Burkina Faso.BMJ global health · 2026Trial
- Impact of Macrolide Resistance on Azithromycin for Prevention of Rehospitalization or Death Among Children Discharged From Hospitals in Western Kenya.The Journal of infectious diseases · 2025Trial
- Spillover of Azithromycin Mass Drug Administration and Child Survival: A Secondary Analysis of a Cluster-Randomized Clinical Trial.JAMA network open · 2025Trial
- Costs, Coverage, and Acceptability of Azithromycin Mass Administration to Children 1-11 Versus 1-59 Months Old to Reduce Mortality: A Cluster-Randomized Trial in Niger.The American journal of tropical medicine and hygiene · 2025Trial
- Trial
- Effect of biannual azithromycin on respiratory pathogens among symptomatic children: results from the randomised Macrolides Oraux pour Réduire les Décès avec un Oeil sur la Résistance (MORDOR) I trial.BMJ global health · 2025Trial
- 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.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024Trial
- Minimal Impact on the Resistome of Children in Botswana After Azithromycin Treatment for Acute Severe Diarrheal Disease.The Journal of infectious diseases · 2024Trial
- Prolonged mass azithromycin distributions and macrolide resistance determinants among preschool children in Niger: A sub-study of a cluster-randomized trial (MORDOR).PLoS medicine · 2024Trial
- Gut Microbiome Diversity and Antimicrobial Resistance After a Single Dose of Oral Azithromycin in Children: A Randomized Placebo-Controlled Trial.The American journal of tropical medicine and hygiene · 2024Trial
- Distance to Health Centers and Effectiveness of Azithromycin Mass Administration for Children in Niger: A Secondary Analysis of the MORDOR Cluster Randomized Trial.JAMA network open · 2023Trial
- Temporal Trends in Phenotypic Macrolide and Nonmacrolide Resistance for Streptococcus pneumoniae Nasopharyngeal Samples Up to 36 Months after Mass Azithromycin Administration in a Cluster-Randomized Trial in Niger.The American journal of tropical medicine and hygiene · 2023Trial
- Neonatal Azithromycin Administration and Growth during Infancy: A Randomized Controlled Trial.The American journal of tropical medicine and hygiene · 2023Trial
- Effect of Neonatal Azithromycin on All-Cause and Cause-Specific Infant Mortality: A Randomized Controlled Trial.The American journal of tropical medicine and hygiene · 2022Trial
55 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
17 authors.
Funding
Abstract
backgroundMass distribution of azithromycin to preschool children twice yearly for 2 years has been shown to reduce childhood mortality in sub-Saharan Africa but at the cost of amplifying macrolide resistance. The effects on the gut resistome, a reservoir of antimicrobial resistance genes in the body, of twice-yearly administration of azithromycin for a longer period are unclear.
methodsWe investigated the gut resistome of children after they received twice-yearly distributions of azithromycin for 4 years. In the Niger site of the MORDOR trial, we enrolled 30 villages in a concurrent trial in which they were randomly assigned to receive mass distribution of either azithromycin or placebo, offered to all children 1 to 59 months of age every 6 months for 4 years. Rectal swabs were collected at baseline, 36 months, and 48 months for analysis of the participants' gut resistome. The primary outcome was the ratio of macrolide-resistance determinants in the azithromycin group to those in the placebo group at 48 months.
resultsOver the entire 48-month period, the mean (±SD) coverage was 86.6±12% in the villages that received placebo and 83.2±16.4% in the villages that received azithromycin. A total of 3232 samples were collected during the entire trial period; of the samples obtained at the 48-month monitoring visit, 546 samples from 15 villages that received placebo and 504 from 14 villages that received azithromycin were analyzed. Determinants of macrolide resistance were higher in the azithromycin group than in the placebo group: 7.4 times as high (95% confidence interval [CI], 4.0 to 16.7) at 36 months and 7.5 times as high (95% CI, 3.8 to 23.1) at 48 months. Continued mass azithromycin distributions also selected for determinants of nonmacrolide resistance, including resistance to beta-lactam antibiotics, an antibiotic class prescribed frequently in this region of Africa.
conclusionsAmong villages assigned to receive mass distributions of azithromycin or placebo twice yearly for 4 years, antibiotic resistance was more common in the villages that received azithromycin than in those that received placebo. This trial showed that mass azithromycin distributions may propagate antibiotic resistance. (Funded by the Bill and Melinda Gates Foundation and others; ClinicalTrials.gov number, NCT02047981.).
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.