A new study highlights the importance of timely immunization of children with measles-containing vaccines. The study was led by Kaiser Permanente Vaccine Study Center in Oakland, CA, and Dr. Ali Rowhani-Rahbar, now an assistant professor of epidemiology at the University of Washington School of Public Health. Measles-containing vaccines are recommended in two doses – the first at 12-15 months of age and the second at four to six years. Researchers studied data from more than 840,000 children 12 to 23 months of age. All children had an increased risk of fever seven to 10 days after administration of a measles-containing vaccine. According to Dr. Rowhani-Rahbar, the vaccines were associated with lower increased risk of seizures when administered at 12 to 15 months of age compared to 16 to 23 months.