Frequency and Cost of Vaccinations Administered Outside Minimum and Maximum Recommended Ages-2014 Data From 6 Sentinel Sites of Immunization Information Systems

Administration of vaccines outside recommended minimum and maximum ages is rare, reflecting a general adherence to recommendations. Error rates were higher for several vaccines, some requiring revaccination. Vaccine schedule complexity and confusion among similar products might contribute to errors. Minimization of errors reduces wastage, excess cost, and inconvenience for parents and patients.