At a glance
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Immunogenicity and Safety of Influenza A/H3N2 Vaccine in Patients With Rheumatologic Diseases
In Brief
A Phase 4 clinical trial evaluating Inactivated and fragmented influenza vaccine (A / Michigan / 45/2015 (H1N1) pdm09-like virus, A / Singapore / INFIMH-16-0019 / 2016 (H3N2) -like virus; B / Phuket / 3073/2013-like virus) for Systemic Lupus and Sjogren's Syndrome. Completed, enrolled 300 participants across 1 site.
Detailed Summary
Studies in the literature have shown reduced effectiveness of influenza A (H3N2) virus vaccine (20-40%) when compared to A (H1N1) and influenza B. This reduction in efficacy may partly result of the need to propagate A (H3N2) virus into egg components for the preparation of the vaccine. Other factors that may also contribute to the reduction of efficacy against A (H3N2) viruses include the high level of genetic diversity and the rate of rapid evolution of this particular virus subtype and the modification of the immune response to the vaccine secondary of prior infection or vaccination. Vaccine efficacy studies are required to verify the immunogenicity of the H3N2 influenza vaccine in immunosuppressed patients with rheumatologic disease. In addition, it is relevant to evaluate the safety of the vaccine in this population as well as the possibility of reactivation of the rheumatologic disease itself. The objectives of this study are to evaluate the immunogenicity of the H3N2 component of the inactivated and fragmented influenza vaccine in patients with two systemic autoimmune rheumatic diseases (Systemic Lupus Erythematosus - Adult and Juvenile, Primary Sjögren's Syndrome).
Study Details
Timeline
Interventions
Single dose of Inactivated and fragmented influenza vaccine (A / Michigan / 45/2015 (H1N1) pdm09-like virus, A / Singapore / INFIMH-16-0019 / 2016 (H3N2) -like virus; B / Phuket / 3073/2013-like virus)