Abstract
Objective: To analyze which factors interfere with the fulfillment of the childhood vaccination calendar update. Methods: This is a descriptive, exploratory research with a quantitative approach conducted in a Basic Health Unit of the municipality of São José dos Matões-MA. Fifty-one children from 0 to 4 years of age participated in the survey, and their parents or guardians presented the child's vaccination booklet with the vaccine registration sheet. Results: The immunobiologicals that obtained the most delayed doses were: meningococcal (18.18%), pneumococcal (16.67%), Pentavalent (9.09%), DTP (7.58%), Tetraviral (7.58%), Yellow Fever (7.58%), Hepatitis A (7.58%), Rotavirus (7.58%), VIP (6.06%), and OPV (6.06%). It was found that the main factors found were children outside the age range (30.77%), sick children (27.69%), forgetfulness (15.38%), unwilling to take the child (10.77%), and other reasons (lack of time, lack of immunology in the post) (6.15%). Final considerations: The factors leading to non-compliance can be diverse, from social or health-related factors, there was a high number of children out of the appropriate age group for the administration of the recommended immunobiological, which makes it difficult to reach vaccination coverage.
Keywords: Immunization in Mass, Immunization Programs, Immunization Schemes.