Despite objections from those medical practitioners who still practised variolation, and who foresaw a decline in their income, free vaccination of the poor was introduced in the UK in 1840.
Varioleerimist pooldavate arstide, kes nägid ette sissetuleku vähenemist, vastupanust hoolimata hakati Ühendkuningriigis 1840. aastal vaeseid tasuta vaktsineerima.