Objective: Determining the impact of including pentavalent vaccine in third-dose immunisation coverage for children aged less than 1 (2002 and 2003) by geographic cluster.

Materials And Methods: This was an ecologic study using department, province, municipality and capital city as analysis units. It compared third-dose coverage, desertion index, number of places having more than 80% immunisation coverage and the number of children being immunised before and after vaccination was introduced. Having more than 80% immunisation coverage was compared to the number of children or places having unsatisfied basic needs, the presence of armed conflict or municipal category.

Results: Immunisation coverage increased from 23% to 26%, mainly for Hib3. Desertion index was 9.3-31.7% in 2000 and 0.3% in 2003. The number of municipalities having more than 80% immunisation coverage increased from 265 in 2000 to 627 in 2003. 462,000-584,000 third-doses were applied in 2000 and 805,000-813,000 in 2003. More municipalities having more than 80% coverage had high unsatisfied basic needs, low socioeconomic income or conflict.

Conclusions: The introduction of the vaccine affected immunisation coverage. Financing should be sought for the vaccine to ensure its continuity and to implement studies for new vaccines or introducing combination vaccines.

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http://dx.doi.org/10.1590/s0124-00642006000400007DOI Listing

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