Association of age-appropriate vaccination status at 24 months with all-cause hospitalizations: A retrospective...

Area of Science:

• Pediatrics
• Immunology
• Public Health

Background:

• Childhood vaccinations offer protection against infectious diseases and may have broader health benefits.
• Vaccination visits provide opportunities to monitor and promote children's overall health.
• This study investigated the association between vaccination status and all-cause hospitalization in young children.

Purpose of the Study:

• To determine if age-appropriate vaccination status at 24 months is associated with a reduced incidence of all-cause hospitalization.
• To explore potential nonspecific health benefits of childhood immunizations beyond disease prevention.

Main Methods:

• A retrospective cohort study utilized vaccine records and healthcare claims from a Japanese city.
• Children born between April 2014 and December 2020 were analyzed.
• Age-appropriate vaccination was defined by completion of national immunization program vaccines by 24 months. A Cox regression model compared hospitalization rates between vaccinated and unvaccinated groups, adjusting for covariates.

Main Results:

• The study included 2,492 children, with 1,689 considered age-appropriately vaccinated.
• No statistically significant difference in all-cause hospitalizations was observed between the age-appropriately vaccinated and unvaccinated groups (aHR, 0.93; 95% CI, 0.69-1.3; P=0.65).

Conclusions:

• The findings suggest that the impact of age-appropriate vaccinations on the overall health of children, as measured by all-cause hospitalization, may be minimal.
• Further research could explore other health outcomes potentially influenced by vaccination schedules.