How can we quickly determine how to “catch up” children who have fallen behind on their shots?

As a general rule, infants or children who are more than 1 month or 1 dose behind schedule should be on an accelerated schedule, which means the intervals between doses should be reduced to the minimum allowable. Catch-up schedules for children ages 4 months through 18 years are included in Table 2 of each year’s recommended immunization schedule for children and adolescents, approved by the ACIP, CDC, and all other major professional organizations of healthcare providers who care for children. To review Table 2, go to www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-age.html and open the current schedule for children and adolescents.