COVID-19 infection after SARS-CoV-2 mRNA vaccination in Multiple Sclerosis, AQP4-antibody NMOSD and MOGAD patients during the Omicron subvariant BA.1/2 wave in Singapore.

This revealed that the non-receipt of V3 was significantly associated with COVID-19 infection (OR 5.401, 95% CI 2.252–12.95, p = 0.0002), while a trend towards significance was observed for immunotherapy group (omnibus p = 0.099), female gender (OR 3.092, 95% CI 0.781–12.24, p = 0.108), and NAbs levels 2–6 weeks post V2 (median [IQR]; infected 18.2% [0.0–94.3] versus uninfected 67.5% (20.9–96.1); OR 0.988, 95% CI 0.974–1.003, p = 0.109) (Table 1 ).

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