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Vaccination completeness in children with rheumatic diseases: A longitudinal, observational multicenter cohort study
Tatjana Welzel1, Jasmin Kuemmerle-Deschner2,3, Constantin Sluka4
1Pediatric Rheumatology, University Children's Hospital Basel, University of Basel, Basel, Switzerland.
Insights
Vaccination completeness is low in Swiss children with pediatric inflammatory rheumatic diseases (PRD), especially for PRD-specific vaccines. Early intervention and collaboration are crucial to improve immunization rates in this vulnerable group.
Area of Science:
- Pediatric Rheumatology
- Infectious Diseases
- Immunology
Background:
- Children with pediatric inflammatory rheumatic diseases (PRD) face an elevated risk of infections.
- Vaccinations are critical for preventing vaccine-preventable diseases in this population.
Purpose of the Study:
- To evaluate vaccination completeness in Swiss PRD patients.
- To stratify vaccination status based on immunosuppressive treatment (IST).
Main Methods:
- A multicenter observational cohort study involving PRD patients under 18 years old.
- Assessment of overall vaccination status, including the Swiss national immunization program (NIP) and PRD-specific vaccines.
- Stratification of completeness by IST and disease course.
Main Results:
- Overall vaccination completeness was low at 3.8%.
- Completeness for NIP vaccinations was 70.1%, while PRD-specific vaccination completeness was only 3.8%.
- Vaccination rates for pneumococcal, hepatitis B, and HPV were 50.4%, 20%, and 37.9%, respectively.
Conclusions:
- A significant gap exists in overall and PRD-specific vaccination completeness among children with PRD.
- Incomplete vaccination status often persists if not addressed early in the disease course.
- Enhanced collaboration between pediatricians and rheumatologists, standardized assessments, and timely reminders are vital to improve vaccination coverage.
Introduction:
Children with pediatric inflammatory rheumatic diseases (PRD) have an increased infection risk. Vaccinations are effective to avoid vaccine-preventable diseases. This study aimed to assess the vaccination completeness in Swiss PRD patients stratified by immunosuppressive treatment (IST).
Materials And Methods:
This multicenter observational cohort study of PRD patients was performed in Basel, Geneva, Lucerne, Lausanne, and Zurich in PRD patients aged < 18 years included in the Juvenile Inflammatory Rheumatism Cohort. Completeness was assessed for i) the overall vaccination status (Swiss national immunization program (NIP) and specific additional PRD-recommended vaccinations), ii) for all and each vaccination of the NIP at PRD diagnosis and reference date (RefD) and iii) all and each specific additional PRD-recommended vaccination at RefD. Completeness was assessed over the disease course and stratified by IST.
Results:
Of 616 eligible patients, 234 children were analyzed. Of these, 147 (63%) were girls. Median age at PRD diagnosis was 6.5 years (IQR 2.9-10.3) and 10.9 years at RefD (6.9-14.3). The median follow-up since PRD diagnosis was 3 years (1.1-5.5). 120/234 children received IST. At RefD, overall vaccination completeness was 3.8% (9/234 children), completeness for the NIP vaccinations was 70.1% (164/234 children; IST 65%, no IST: 75.4%) and for all specific additional PRD-recommended vaccinations was 3.8% (9/234 children; IST 2.5%; no IST 5.3%). Vaccination completeness against pneumococcal disease, hepatitis B virus, and human papilloma virus (HPV) was 50.4, 20, 37.9%, respectively. In 25/35 children with negative varicella zoster virus history vaccination status was complete (IST: 94.4%, no IST: 47%). Annual non-live influenza vaccination was complete in 24.2% of children during IST; adherence decreased over the disease course.
Discussion:
This study identified a low overall vaccination completeness in children with PRD. Particularly, the completeness of specific additional PRD-recommended vaccinations was low. If not performed early after PRD diagnosis, vaccination status remained frequently incomplete. Close collaboration between pediatrician and rheumatologist to improve vaccination completeness is essential. Exchange of vaccination records, standardized assessment of specific PRD-recommended vaccinations and those of the NIP, and annual reminder for influenza vaccination are crucial to improve vaccination completeness in this vulnerable pediatric population.
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