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Mass azithromycin administration reduces childhood mortality in certain countries, with greatest benefits in young infants and populations having highest infant mortality (NEJM JW Infect Dis Jun 5 2019; multiple citations). WHO has recommended limiting the use of this intervention to infants aged 1–11 months in selected countries to minimize risk for antimicrobial resistance — but is that the best approach?
In a double-blind, response-adaptive, cluster-randomized, placebo-controlled trial in rural and periurban Niger throughout 2 years, investigators assigned communities to twice-yearly azithromycin for all children aged 1–59 months, twice-yearly azithromycin for infants aged 1–11 months and placebo for children aged 12–59 months, or twice-y…