Acknowledgements
The authors wish to acknowledge the Danish Departments of Clinical Microbiology and Statens Serum Institut for carrying out laboratory analysis, registration, and release of the national SARS-CoV-2 surveillance data used in the present study. Further, the authors wish to thank all the Danish Departments of Rheumatology for reporting to the DANBIO register.
Disclosure statement
Ali Hadi Abd Alzubaidi, René Cordtz, Rasmus Westermann, Karen Buch Lauridsen, and Salome Kristensen have no conflicts of interests. Bolette Gylden Soussi has received a research grant from the Danish Rheumatism Association and has stocks in Novo Nordisk. Lene Dreyer has received research support from Janssen, UCB, and Boehringer Ingelheim for attending meetings and/or travel, has a research grant/contract with BMS outside the present work, has a leadership role with a Chair in the Scientific Committee of the Danish Rheumatism Association, and is a member of the Danish National Ethical committee 3 and the steering committee of DANBIO.
Patient and public involvement statement
It was not appropriate or possible to involve patients or the public in the design, conduct, reporting, or dissemination plans of our research.