CD52 and COVID-19: We also did not observe a significant association between with anti‐CD52 or anti‐CD19/anti‐CD20 treatment within two years prior to COVID‐19 diagnosis [Fig 2, anti‐CD52: OR 1·17 (95% CI 0·54–2·52); anti‐CD19/CD20: OR 0·91 (95% CI 0·61–1·36)].