Introduction. In 1999, a three-year cycle of school-based surveys was established to estimate indicators for monitoring children’s health, including vaccination coverage. Method. A survey was conducted in 2005–2006 among 6-year-old children in their final year of preschool. The sample was selected using a two-stage random sampling method (random selection of schools, followed by random selection of students within the selected schools). Results. The analysis included 21,346 children with a health record in which the vaccination section had been completed. Coverage was high for the tuberculosis vaccine (Bacille Calmette-Guérin (BCG) 96.8%), for tetanus, diphtheria, and polio (DTP-Polio, 4 doses: 96.7%), for pertussis (4 doses: 95.0%), against invasive Haemophilus influenzae type b (Hib, 4 doses: 89.9%), and the first dose of the measles, mumps, and rubella (MMR) vaccine (93.7%, 91.4%, and 91.4%, respectively). Coverage was low for the second dose of MMR (45.1%, 43.3%, 43.2%) and for hepatitis B (37.9%). Geographic area, urban unit size, school district, father’s occupation, and the child’s birth order influenced coverage for hepatitis B and MMR (2 doses). Discussion – Conclusion. In 2005–2006, BCG, DTP-Polio, pertussis, and Hib coverage at age 6 remained stable and satisfactory. Hepatitis B and MMR (1 dose) coverage was insufficient. MMR (2 doses) coverage has improved but still needs to be enhanced. (R.A.)