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In MORDOR I, communities were enrolled and randomly assigned to 4 biannual distributions of azithromycin or placebo. In MORDOR II, these same communities were followed, with both arms offered 2 biannual distributions of azithromycin. Distribution by randomization unit is expressed as the estimated mean (±SD) for the population. No communities were lost to follow-up during MORDOR I or MORDOR II.
