Armstrong E, Hemmerling A, Miller S, et al. Sustained effect of LACTIN-V (Lactobacillus crispatus CTV-05) on genital immunology following standard bacterial vaginosis treatment: results from a randomised, placebo-controlled trial. Lancet Microbe 2022; 3: e435–42—In this Article, the number of participants in the larger LACTIN-V clinical trial from which the sub-analysis was performed should have been 228 throughout the Article. This correction has been made as of June 2, 2022.