A woman was potentially reinfected with SARS-CoV-2 — the virus that causes COVID-19 — while on immunosuppressive therapy for ANCA-associated vasculitis (AAV). This case suggests that immunosuppressed patients are at risk of viral reinfection or persistence, likely because their immune system cannot produce antibodies to fight off subsequent infections. It may also have implications for vaccination, which might be less effective in people on immunosuppressive treatments. The case report, “COVID‐19 Reinfection in a Patient Receiving Immunosuppression…

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