Evaluation of immunization status in patients with cerebral palsy: a multicenter CP-VACC study

Sema Bozkaya-Yilmaz1, Eda Karadag-Oncel2, Nihal Olgac-Dundar3

  • 1Department of Pediatric Neurology, University of Health Sciences, Tepecik Training and Research Hospital, Izmir, Turkey. semabozkayayilmaz@gmail.com.

Insights

Children with cerebral palsy (CP) show lower vaccination rates and incomplete immunization schedules, particularly those with severe motor dysfunction. Increased clinical focus on preventative vaccines is crucial for this vulnerable population.

Area of Science:

  • Pediatric Neurology
  • Immunology
  • Public Health

Background:

  • Children with cerebral palsy (CP) are at increased risk for severe infections and disease decompensation.
  • Health authorities identify chronic neurological diseases as high-risk for influenza and pneumococcal infections, recommending vaccination.
  • CP is associated with a high risk of incomplete and delayed immunizations, posing a significant concern.

Purpose of the Study:

  • To assess age-appropriate immunization status in children with CP.
  • To identify factors associated with vaccination status in the CP population.
  • To evaluate influenza vaccine recommendation and administration rates in children with CP.

Main Methods:

  • A cross-sectional, prospective, multicentered survey study involving 1194 children with CP across 18 pediatric neurology clinics in Turkey.
  • Data collection included patient and CP characteristics, comorbidities, National Immunization Program (NIP) vaccination status, and influenza vaccine recommendations.
  • Statistical analysis compared immunization rates between children with mild-to-moderate (grades 1-3) and severe (grades 4-5) motor dysfunction.

Main Results:

  • Overall immunization rates were suboptimal, with 15.2% of children not fully vaccinated according to age.
  • BCG, hepatitis B, and oral poliovirus vaccine had high completion rates (over 88%), while DTaP-IPV-HiB (60.5%) and pneumococcal conjugate vaccine (PCV) (54.1% within NIP) were lower.
  • Influenza vaccine administration was very low (3.4%), with 93.9% of parents never having received a recommendation.
  • Children with severe motor dysfunction (grades 4-5) had significantly higher rates of incomplete/no vaccination for several NIP vaccines compared to those with mild-to-moderate dysfunction.
  • Physicians were more likely to recommend the influenza vaccine to children with severe motor dysfunction (p=0.029).

Conclusions:

  • Children with CP exhibit lower immunization coverage and incomplete vaccination programs.
  • Severity of motor dysfunction in CP correlates with higher rates of incomplete immunizations.
  • Clinicians must prioritize and ensure children with CP receive comprehensive preventative health measures, including timely vaccinations, comparable to healthy children.