INTRODUCTION:

Vaccination is a safe intervention that provides individual and collective immunity if the schemes are correctly followed. DTP vaccine protects against diphtheria, tetanus, and pertussis; and MMR against measles, mumps, and rubella. Booster doses are indicated in order to correct possible primary vaccine failures and to ensure immunity.

OBJECTIVES:

To estimate the coverage of the second DTP booster and the second MMR dose in children from 7 to 9 years old, and to identify possible factors associated with non-vaccination.

MATERIALS AND METHODS:

A cross-sectional household survey was conducted with a probabilistic sample by 30x7 clusters, resulting in 206 children living in Santa Maria, Distrito Federal, Brazil from June to July, 2012. Data analysis was performed by calculating the frequency measures, central tendency and dispersion, as well as the prevalence ratio associated with the vaccination.

RESULTS:

There was low vaccine coverage for the second DTP booster (72.3%; 95% CI: 66-78) and the second MMR dose (76.7%; 95% CI: 71-83). Factors related to non-vaccination were significant when the children caregivers were not the parents; families with three children or more; to be the fourth child or more; and not receive home visits from health professionals.

CONCLUSION:

The socioeconomic conditions of families and the low vaccination rate among children result in low vaccination coverage and greater susceptibility to illness.

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