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- W4322766095 abstract "Currently, there are no data available on SARS-CoV-2 vaccine responses in pediatric-onset multiple sclerosis (POMS), and little is known about the course of SARS-CoV-2 infection in this age group. We therefore investigated humoral immune responses after COVID-19 vaccination and/or infection in POMS.We retrospectively analyzed seroconversion rates and SARS-CoV-2-specific antibody levels in 30 POMS and one pediatric CIS patient treated with no disease-modifying therapy (no DMT), immunomodulatory DMT (IM-DMT), or immunosuppressive DMT (IS-DMT) from two Austrian MS centers.The median age at MS onset was 15.39 years (interquartile range [IQR]: 1.97). The median age at the first COVID-19 vaccination was 17.43 years (IQR: 2.76). After two vaccine doses, seroconversion (≥0.8 BAU/ml) was reached in 25 of 28 patients (89.3%). All patients with no DMT or IM-DMT generated robust immune responses to vaccination (seroconversion: no DMT: 6/6, IM-DMT: 7/7 [100%]; median titers: no DMT: 2075 BAU [IQR: 1268.50], IM-DMT: 2500 BAU [IQR: 0]). In the IS-DMT group, seroconversion was achieved in 12 of 14 patients (80%), and median titers were 50.8 BAU (IQR 254.63). Titers were significantly higher in no DMT versus IS-DMT (P = 0.012) and in IM-DMT versus IS-DMT (P = 0.001). Infection with SARS-CoV-2 occurred in 11 of 31 patients, and symptoms were mild in all cases. One relapse occurred after infection, but no relapses were documented after vaccination.Generally, mRNA vaccinations were well tolerated in POMS patients with and without DMT. Immune response was significantly reduced in patients treated with IS-DMT. No unexpected adverse events or relapses related to vaccinations were observed." @default.
- W4322766095 created "2023-03-03" @default.
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- W4322766095 date "2023-06-01" @default.
- W4322766095 modified "2023-10-18" @default.
- W4322766095 title "Humoral Immune Response Following SARS-CoV-2 mRNA Vaccination and Infection in Pediatric-Onset Multiple Sclerosis" @default.
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- W4322766095 doi "https://doi.org/10.1016/j.pediatrneurol.2023.02.017" @default.
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