February 2026
Update
AZTEC results animation available
The AZTEC animation provides a clear visual explanation of the clinical question, the treatment tested and the principal trial result.View the AZTEC results.
Read update →AZTEC news
Research, follow-up and the AZTEC story
The new News section prioritises scientific results and follow-up while retaining recruitment milestones as part of the historical record.
Featured updates
Latest from AZTEC
June 2025
Update
AZTEC Investigators’ Study Day
Investigators and invited experts discussed findings from the primary AZTEC trial together with emerging laboratory and follow-up analyses.Explore the AZTEC research outputs.
Read update →August 2024
Update
Main AZTEC results published
The primary randomised controlled trial was published in The Lancet Respiratory Medicine. Routine prophylactic azithromycin did not improve survival without physiologically defined moderate or severe chronic lung disease.Explore the results.
Read update →July 2023
Update
First-year follow-up questionnaires completed
The final one-year questionnaire was mailed in July 2023; more than 500 completed first-year questionnaires had already been returned by families at that point.Read about the follow-up programme.
Read update →March 2022
Update
AZTEC completes recruitment at 799 babies
Recruitment finished above the original target of 796 participants following an extraordinary UK-wide neonatal collaboration.Read the AZTEC story.
Read update →Archive
Recruitment milestones
Older posts documenting 150, 200, 250, 500, 600 and 700 recruits remain part of the trial’s history, but they no longer need to dominate the modern website.
Recommended approach: retain the original WordPress posts in an “AZTEC history” archive, preserving dates and institutional memory while keeping the main News page focused on scientific outputs and follow-up.