“…Given the breadth of the search strategy, including four indexed databases and handsearching of reference lists, it is likely that no articles have been missed or inappropriately excluded. Several related studies were excluded as either no clear intervention was implemented (Afonso et al, 2017;Baessler et al, 2022;Caruso Brown et al, 2017;Dybsand et al, 2019;Kernéis et al, 2017;Pelly et al, 2010;Vorsters et al, 2010) or the intervention and objectives focused on improving vaccine knowledge rather than VH communication (Bechini et al, 2019;Marotta et al, 2017). Within the included studies, several (Kelekar et al, 2022;Koski et al, 2018;Lepiller et al, 2020;Schnaith et al, 2018) did not report outcomes of interest, including teaching duration, instructor background or outcome assessment, potentially influencing the outcomes reported in this review.…”