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Published on: May 16, 2025
Pneumococcal vaccine in rheumatoid arthritis
1University of Nebraska Medical Center (J.R.O., J.G., C.H., L.K., G.M.), Omaha Veterans Administration Medical Center (J.R.O., L.K.), and the Rheumatoid Arthritis Investigational Network (RAIN) (J.R.O., J.G., W.P., C.H., L.K., G.M.), Omaha, Nebraska.
Summary
Rheumatoid arthritis patients generally respond well to pneumococcal vaccination, with 80% achieving protective antibody levels. However, methotrexate use was associated with a diminished vaccine response in these patients.
Area of Science:
- Immunology
- Rheumatology
- Vaccinology
Background:
- Rheumatoid arthritis (RA) is a chronic autoimmune disease.
- Patients with RA are at increased risk of infections, including pneumococcal disease.
- Pneumococcal vaccination is recommended for RA patients, but vaccine response may be affected by disease activity or treatments.
Purpose of the Study:
- To evaluate the immunogenicity of pneumococcal vaccination in patients with rheumatoid arthritis.
- To determine if patient age or methotrexate use impacts the antibody response to pneumococcal vaccination in RA patients.
Main Methods:
- Forty RA patients received pneumococcal vaccination.
- Patients were stratified into four groups based on age and methotrexate treatment status.
- Pneumococcal antibody levels were measured before and 6 weeks after vaccination.
Main Results:
- Eighty percent of RA patients achieved protective antibody levels post-vaccination.
- Age did not significantly influence the antibody response.
- Methotrexate-treated patients demonstrated a significantly lower response compared to non-methotrexate-treated patients (p = 0.03).
Conclusions:
- Patients with rheumatoid arthritis generally exhibit a robust response to pneumococcal vaccination.
- Methotrexate therapy may impair the immune response to pneumococcal vaccines in RA patients.
- Pneumococcal vaccination prior to initiating methotrexate therapy is recommended for RA patients.
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