Acceptability of financial incentives or quasi-mandatory schemes to increase uptake of immunisations in preschool children in the United Kingdom: Qualitative study with parents and service delivery staff

FI for preschool immunisation may not be acceptable, within a UK context. Introducing FI could have detrimental effects on uptake if it were associated with bribery and coercion. Quasi-mandatory schemes, mandating immunisation for universal service entry, was the most acceptable option and could contribute to the normalising of immunisation. Future work would be needed to assess how this could be successfully implemented and if it did indeed increase uptake.