INTRODUCTION: In Argentina @entity1576 is the third leading cause of death in @entity1 under 5 years. In 2011 @entity683 vaccination was included in the National Calendar for @entity1 between 6 and 24 months (two doses schedule). Influenza vaccine coverage for second dose was 46.1% in 2013. The aim was to determine the proportion of delayed schedules and missed opportunities, to assess the characteristics of missed opportunities for vaccination and to explore the perception of @entity66 and vaccination from the parents of @entity1 between 6 and 24 months in different regions of Argentina in 2013. METHODS: Analytical observational multicenter cross-sectional study. Structured surveys were carried out to the @entity1 's parents who were between 6 and 24 months of age during the @entity683 virus vaccination season (April-October 2013). Chi-Square test was used to assess association and differences between proportions and categorical variables. A logistic regression model was built to identify delay predictor variables in the vaccination schedules. Missed opportunities for vaccination were characterized through the estimation of proportions. RESULTS: 1350 surveys were conducted in the three centers. We detected 65% (884/1340) of delayed @entity683 vaccination schedules, 97% of them associated with missed opportunities of vaccination. The independent protective factors associated with a decreases risk of delayed schedules were: (a) perception of the importance of @entity683 vaccination (OR=0.42(0.18-0.94); p=0.035), (b) having less than one year of age (OR=0.75(0.59-0.96); p=0.022), (c) to have received information in pediatric visits or in any media (OR=0.71(0.56-0.90); p=0.004). There was 38% of MOIV in 1st dose and 63.4% in 2nd dose. The main cause of MOIV in 1st dose was not detecting the need for vaccination (39%) and in 2nd dose the unknowledge of the vaccination schedule (35.3%). No cultural reasons were detected. CONCLUSIONS: High frequency of delayed vaccination schedules and missed opportunities were detected. Parents had little concern about the safety of @entity683 vaccine.

Influenza vaccine: Delayed vaccination schedules and missed opportunities in XXXX under 2 years old.

@entity1 :: ('9606', 'Species') :: ['children'] @entity683 :: ('MESH:D007251', 'Disease') :: ['influenza'] @entity1576 :: ('MESH:D012131', 'Disease') :: ['respiratory disease'] @entity66 :: ('MESH:D004194', 'Disease') :: ['influenza disease']
@entity1 :: (9606,Species) :: ['children']
