Negative SARS-CoV2-antibodies after positive COVID-19-PCR nasopharyngeal swab in patients treated with anti-CD20 therapies

Affiliations

• ¹ Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, 3010, Switzerland.
• ² Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
• ³ Institute for Infectious Diseases, University of Bern, Bern, Switzerland.
• ⁴ Department of infectious diseases, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.