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Impact of a vaccination promotion intervention using motivational interview techniques on long-term vaccine coverage:
Thomas Lemaitre1, Nathalie Carrier1, Anne Farrands1
1a Centre de Recherche du Centre hospitalier universitaire de Sherbrooke , Sherbrooke , Quebec , Canada.
Insights
An infant immunization information session improved vaccination rates. This educational intervention during postpartum stays increased the likelihood of complete vaccination status by 9% in children up to 24 months.
Area of Science:
- Public Health
- Pediatrics
- Preventive Medicine
Background:
- Delayed infant vaccinations increase the risk of incomplete childhood immunization.
- Early childhood vaccination schedules are critical for disease prevention.
- Understanding factors influencing vaccination adherence is essential for public health strategies.
Purpose of the Study:
- To evaluate the effectiveness of an educational information session using motivational interviewing techniques on infant immunization rates.
- To assess the impact of this intervention delivered during the postpartum period.
- To determine if the intervention improves timely and complete vaccination status in infants.
Main Methods:
- A quasi-experimental cohort study compared an intervention group receiving an educational session with a control group.
- Immunization data were collected from a public health registry at multiple time points (3, 5, 7, 13, 19, 24 months).
- Logistic regressions with repeated measures and adjusted multivariate models were used to analyze the intervention's impact on vaccination status.
Main Results:
- The intervention group showed significant increases in vaccination coverage (VC) at all measured time points.
- Children in the intervention group had a 9% higher likelihood of complete vaccination status between 3 and 24 months (RR: 1.09).
- Complete vaccination at 3 months strongly predicted complete vaccination at 24 months (RR: 2.72), with the intervention showing a sustained adjusted impact (RR: 1.05).
Conclusions:
- An educational information session incorporating motivational interviewing during postpartum hospitalization can effectively enhance infant immunization rates.
- This intervention shows promise for improving adherence to recommended childhood vaccination schedules.
- Early intervention strategies during the postpartum period are valuable for long-term public health outcomes.
Background:
Delayed vaccinations at 2, 4, and 6 months are associated with a higher probability of delayed age-appropriate vaccination during childhood. This study aimed to assess the effectiveness of an information session on immunization during infancy.
Methods:
An individual educational information session with motivational interview techniques for immunization of infants was conducted (experimental group) or not conducted (control group) during postpartum stay in a quasi-experimental cohort study. Immunization data were collected from the Eastern Townships Public Health registry at 3, 5, 7, 13, 19, and 24 months of age. Logistic regressions with repeated measures were performed to assess the intervention's impact. Relative risks (RR) were estimated. A multivariate model was obtained adjusted for confounding factors.
Results:
The experimental and control groups included 1140 and 1249 families, respectively. In per protocol analysis, a significant increase in VC of 3.2, 4.9, 7.3, 6.7, 10.6, and 5.1% was observed at 3, 5, 7, 13, 19, and 24 months. Children from experimental group had 9% more chance at a complete vaccination status between 3 and 24 months compared to children from control group (RR (95% CI): 1.09 (1.05-1.13), p < .001). Children with complete vaccination status at 3 months were more likely to have a complete vaccination status at 24 months (82.3 vs. 48.1%, RR (95% CI): 2.72 (2.28-3.24), p < .001). After adjustment, the estimated RR of the intervention's impact was 1.05 (1.02-1.07), p < .001.
Conclusions:
An educational information session about immunization based on motivational interview techniques conducted during postpartum hospitalization could improve immunization during infancy.
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