Vaccinated children with cerebral palsy show better motor, communication function in cohort study
Photo by Vitaly Gariev / Unsplash
Key Takeaway
Interpret observed vaccine-neurodevelopment link in CP with caution; association is not causation.
A bidirectional cohort study (retrospective and prospective) examined 484 children diagnosed with cerebral palsy at a single Chinese hospital. The study compared neurodevelopmental outcomes between children who had received at least one vaccine dose and those who were unvaccinated. The primary outcomes were motor function, measured by Gross Motor Function Classification System (GMFCS) levels, and communication function, measured by Communication Function Classification System (CFCS) levels.
The vaccinated group demonstrated significantly better motor function, with a statistical effect size of z = 3.26 (p = 0.001), indicating lower (better) GMFCS levels. They also showed significantly better communication function, with an effect size of z = 2.89 (p = 0.004), indicating higher (better) CFCS levels. An analysis found a negative correlation (r = -0.24) between vaccination completion rate and GMFCS levels, suggesting higher vaccination rates were associated with better motor scores. Absolute numbers for these outcomes were not reported.
Safety and tolerability data, including adverse events and discontinuations, were not reported. The study has several key limitations: its observational design means it can only show association, not causation; it was conducted at a single center, limiting generalizability; and potential confounding factors were not fully addressed. The authors state the findings are intended to inform targeted vaccination strategies, but clinical application requires confirmation from more rigorous studies.
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View Original Abstract ↓
BackgroundThe safety of vaccines and their impact on functional outcomes in children with cerebral palsy remain significant concerns for both parents and healthcare providers. These concerns have limited the full implementation of routine immunization schedules in this specific population.ObjectiveThis study aimed to investigate the association between vaccination status and the development of motor and communication functions in children with cerebral palsy. The findings are intended to inform the development of targeted vaccination strategies.MethodsWe conducted a bidirectional cohort study involving 484 children diagnosed with cerebral palsy at the Second Affiliated Hospital of Xinjiang Medical University between January 2018 and December 2024. Participants were divided into a retrospective cohort (diagnosed 2018–2020, n = 277) and a prospective cohort (diagnosed 2021–2022, n = 207). Based on vaccination status, they were further classified into a vaccinated group (received at least one dose) and an unvaccinated group. Functional abilities were assessed using established classification systems, including the Gross Motor Function Classification System (GMFCS) and the Communication Function Classification System (CFCS). Vaccination completion rates were calculated according to the 2021 Chinese National Immunization Program Schedule. Statistical analyses included the Mann–Whitney U test and Spearman correlation to compare groups and examine relationships between vaccination completion rates and functional scores.ResultsChildren in the vaccinated group demonstrated significantly better motor function, reflected by lower GMFCS levels (z = 3.26, p = 0.001), and significantly better communication function, reflected by higher CFCS levels (z = 2.89, p = 0.004), compared to the unvaccinated group. A higher vaccination completion rate was negatively correlated with GMFCS levels (r = −0.24, p
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