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by angelzen
1672 days ago
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Common wisdom is that immunocompromised individuals, which are unable to battle off the virus and suffer the infection for long periods of time, are fertile grounds for variants evolution. "Rapid viral evolution has been described in immunosuppressed patients with persistent SARS-CoV-2 infection. Choi et al. described an immunosuppressed patient with antiphospholipid syndrome who was hospitalized in August 2020 and treated with anticoagulants, glucocorticoids, cyclophosphamide, intermittent rituximab, and eculizumab.2 During 152 days of persistent SARS-CoV-2 infection in this patient, the investigators identified 31 substitutions and three deletions in genome sequences. Twelve spike mutations were found, including seven in a segment of the receptor-binding domain consisting of 24 amino acids, some at sites linked to immune evasion (478, 484, and 493).6,7 The patient eventually died of severe Covid-19–related pneumonia. " https://www.nejm.org/doi/full/10.1056/NEJMsb2104756 |
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