In Italy, in this period, much attention is dedicated to reach adequate vaccination coverage in children and adolescents. In this study, Vaccination Registry was checked in a Local Health Unit in Rome, Italy, to identify children born in 2007 and 2008 who had not completed the vaccination schedule. Coverage for booster doses of measles, mumps, rubella and for diphtheria, tetanus, pertussis and polio vaccines in the 2213 children was around 70%. A reminder letter was send to parents of the 661 incompletely immunized children and, if they did not reply, a phone call was made when the phone number was available. With this recall system, 12% of the children were correctly immunized, reaching about 82% coverage.