1 Colorado Permanente Medical Group, 8383 West Alameda Avenue, Lakewood, Colorado 80226
We are very pleased that our article stimulated Dr. Overend and his associates to review their immunization activities. Their vaccine-specific levels appear to be higher than those we reported. However, the differences in study design make a direct comparison impossible. Our study was designed to evaluate preschool immunization levels exclusively. The selection of 2-year-old children allows for little delay in the performance of the required vaccinations. Consequently, lower overall and vaccine-specific levels were obtained than would be the case had older children been used.
See table in the PDF file