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We analyzed samples obtained at baseline and 24 months in a mass azithromycin administration trial in Niger using quantitative polymerase chain reaction. In villages randomized to azithromycin, Shigella was the only pathogen reduced at 24 months (prevalence ratio, 0.36 [95% confidence interval: .17-.79]; difference in log quantity, -.42 [-.75 to -.10]).
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Platts-Mills et al. (2022) studied this question.
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