An unpublished earlier version of the work presented here was part of a report submitted by the Bill & Melinda Gates Foundation to the WHO committee on azithromycin in Fall 2018, in response to the latter’s list of questions to inform the synthesis of evidence. We thank Foundation officers for inviting us to participate in that response. A. P. O. thanks John Wakefield and Peter Hoff for useful discussion. We also thank the anonymous reviewers for their timely work and insightful comments.
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