id author title date pages extension mime words sentences flesch summary cache txt cord-328505-5fkpnbdb Thornton, Jeanine Rempe Negative SARS-CoV-2 antibody testing following COVID-19 infection in Two MS patients treated with ocrelizumab 2020-06-26 .txt text/plain 997 75 48 title: Negative SARS-CoV-2 antibody testing following COVID-19 infection in Two MS patients treated with ocrelizumab We report a series of two MS patients who developed COVID-19 while on Ocrelizumab therapy and subsequently exhibited negative SARS-CoV-2 serology. The sensitivity may be diminished by inadequate timing of testing following an infection, but the most recent literature suggests that the vast majority of patients with symptomatic COVID-19 produce antibodies within the first two to three weeks after symptom onset (Long et al., 2020) . In MS, a possible concern is the impact of certain DMTs, such as CD-20 monoclonal antibodies In this article, we report serology results from the first two patients at our center to have undergone SARS-CoV-2 antibody testing after developing COVID-19 while on Ocrelizumab therapy. In this case series, we present negative results from the first two MS patients at our site who underwent SARS-CoV-2 antibody testing after developing PCR-confirmed COVID-19 while on Ocrelizumab. ./cache/cord-328505-5fkpnbdb.txt ./txt/cord-328505-5fkpnbdb.txt