2021
DOI: 10.1093/ofid/ofab295
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Persistent Severe Acute Respiratory Syndrome Coronavirus 2 Infection in Immunocompromised Host Displaying Treatment Induced Viral Evolution

Abstract: We report a COVID-19 case with SARS-CoV-2 persisting beyond 333 days in an immunocompromised patient with chronic lymphocytic leukemia, asymptomatically carrying infectious SARS-CoV-2 at day 197 post diagnosis. Additionally, viral sequencing indicates major changes in the spike protein over time, temporally associated with convalescent plasma treatment.

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Cited by 22 publications
(15 citation statements)
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“…Rituximab therapy has been associated with severe forms of COVID‐19 in patients with rheumatic diseases or hematologic malignancies. 8 , 9 , 10 , 11 Cases of prolonged SARS‐COV‐2 shedding or a COVID‐19 relapse in patients treated with rituximab have also been reported 12 , 13 in patients with hematologic malignancies. The patient failed to produce antibodies against SARS‐CoV‐2 supporting the conclusion drawn from previous studies that patients on rituximab are unable to produce neutralizing antibodies, resulting in more severe and more prolonged diseases.…”
Section: Discussionmentioning
confidence: 99%
“…Rituximab therapy has been associated with severe forms of COVID‐19 in patients with rheumatic diseases or hematologic malignancies. 8 , 9 , 10 , 11 Cases of prolonged SARS‐COV‐2 shedding or a COVID‐19 relapse in patients treated with rituximab have also been reported 12 , 13 in patients with hematologic malignancies. The patient failed to produce antibodies against SARS‐CoV‐2 supporting the conclusion drawn from previous studies that patients on rituximab are unable to produce neutralizing antibodies, resulting in more severe and more prolonged diseases.…”
Section: Discussionmentioning
confidence: 99%
“…The host immune response typically clears SARS-CoV-2 infections by 15 to 25 days 14 , and this short duration of active virus replication limits within-host evolution. In contrast, infections in immunocompromised individuals can be prolonged, with the most prolonged previously documented infection lasting 333 days 5 . Prolonged infections may facilitate SARS-CoV-2 evolution by providing time for within-host selection to act, potentially driving the emergence of immunologic escape variants (reviewed in 6 ).…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, a strong selection on SARS-CoV-2 has been reported after convalescent plasma therapy in immunosuppressed individuals, leading to the emergence of viral variants with reduced susceptibility to neutralizing antibodies [12,21,22,32]. Interestingly, the presence of mutations was more frequently observed in samples of days 143 and 207 compared to the earliest available one, and it led to the identification of multiple intra-host microevolution pathways considering the 7-month period of infection.…”
Section: Discussionmentioning
confidence: 99%
“…To the best of our knowledge, it is one of the longest SARS-CoV-2 persistent asymptomatic infections reported to date. Although few reports of year-long SARS-CoV-2 detection in immunocompromised hosts have been described, it is unusual to observe a fully asymptomatic patient carrying the virus for more than 6 months [ 21 , 22 ].…”
Section: Discussionmentioning
confidence: 99%