Parent Acceptability
INFLUENZA
A parent survey was completed by 242 of 600 participants (response rate of 40.3%). Respondents’ children were more likely to have received the 2021 influenza vaccine according to the AIR compared with overall trial participants (106 of 242 [43.8%] vs 192 of 595 [32.7%]). Parents were more likely to overreport their child having received the influenza vaccination. Vaccine receipt was unable to be substantiated on the AIR for 21 of 125 children (16.8%) whose parents reported vaccine receipt, whereas 2 of 117 children (1.7%) whose parents reported not having received the vaccine were found to be vaccinated on the AIR. Parents whose children had not received the influenza vaccine were less likely to have received enough information to decide about their child receiving the vaccine compared with those whose children had received the vaccine (82 of 130 [63.1%] vs 92 of 106 [86.8%]; 