Potential use of antibodies to provide an earlier indication of lymphatic filariasis resurgence in post–mass drug ad ministration surveillance in American Samoa

•The patterns of the antibody (Ab) responses varied across the 3 transmission assessment surveys (TASs).•The overall and school-level prevalence of Bm33 Ab was the highest in all TASs.•Bm14 Ab-positive schools decreased, whereas Wb123 Ab-positive schools increased.•Abs could provide earlier signals...

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