It is unclear whether information given about the benefits and risks of routine childhood vaccination during consent may cue parental vaccine hesitancy. Parents were surveyed before and after reading vaccine consent information at a public expo event in Sydney, Australia. We measured vaccine hesitancy with Parent Attitudes about Childhood Vaccine Short Scale (PACV-SS), informed decision-making with Informed Subscale of the Decisional Conflict Scale (DCS-IS), items from Stage of Decision Making, Positive Attitude Assessment, Vaccine Safety and Side Effect Concern, and Vaccine Communication Framework (VCF) tools. Overall, 416 parents showed no change in vaccine hesitancy (mean PACV-SS score pre = 1.97, post = 1.94; diff = -0.02 95% CI -0.10 to 0.15) but were more informed (mean DCS-IS score pre = 29.05, post = 7.41; diff = -21.63 95% CI -24.17 to -18.56), were more positive towards vaccination (pre = 43.8% post = 50.4%; diff = 6.5% 95% CI 3.0% to 10.0%), less concerned about vaccine safety (pre = 28.5%, post = 23.0%, diff = -5.6% 95% CI -2.3% to -8.8%) and side effects (pre = 37.0%, post = 29.0%, diff = -8.0% 95% CI -4.0% to -12.0%) with no change in stage of decision-making or intention to vaccinate. Providing information about the benefits and risks of routine childhood vaccination increases parents' informed decision-making without increasing vaccine hesitancy.
Keywords: childhood vaccination; consent; consent support resource; information; informed choice; vaccine hesitancy.