Original Investigation

Initial Vancomycin Taper for the Prevention of Recurrent Infection

JAMA Network Open 10.1001/jamanetworkopen.2025.60495

February 27, 2026 at 11:00 AM EST

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Does a 4-week pulse and taper regimen of vancomycin reduce the risk of recurrent infection compared with a standard pulse regimen among patients with a first episode or first recurrence?In this randomized clinical trial of 265 participants, the posterior probability of superiority for vancomycin pulse plus taper was 74%. The trial was stopped early due to feasibility of recruitment.The vancomycin pulse and taper regimen could represent a safe and accessible treatment option to delay or prevent early recurrence of infection.

Corresponding Author: Emily G. McDonald MD MSc, McGill University Health Centre, Centre for Outcomes Research and Evaluation, 5252 De Maisonneuve Blvd, Montreal, QC H4A 3J1, Canada (emily.mcdonald@mcgill.ca).

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