Paediatricsniche
You are the intern attached to a regional public health unit. Its annual child health profile for a town of 4,000 people reports: two-dose measles-mumps-rubella coverage at five years 94.6% (national target 95%); fluoride in the town's reticulated water supply 0.1 mg/L (optimal 0.6 to 1.1 mg/L); untreated dental decay in 4-year-olds 38% (state average 24%); hospitalisation for injury in children under five at the state average; 91% of children have a usual general practitioner. There has been no local outbreak of any notifiable disease. Which one of the following measures would prevent the most disease in this town's children?