International Journal of Infectious Diseases (Aug 2022)

A Fatal Breakthrough COVID-19 Case Following Bendamustine-Rituximab Therapy

  • Kohei Kamegai,
  • Noriko Iwamoto,
  • Tomiteru Togano,
  • Kenji Maeda,
  • Yuki Takamatsu,
  • Yusuke Miyazato,
  • Masahiro Ishikane,
  • Masashi Mizokami,
  • Masaya Sugiyama,
  • Shun Iida,
  • Sho Miyamoto,
  • Tadaki Suzuki,
  • Norio Ohmagari

Journal volume & issue
Vol. 121
pp. 85 – 88

Abstract

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Although messenger ribonucleic acid vaccines are substantially effective toward SARS-CoV-2 infection, patients with hematologic malignancies are still prone to the virus. Herein, we report a fatal case of breakthrough SARS-CoV-2 Delta variant infection in a patient with mucosa-associated lymphoid tissue lymphoma with remission by bendamustine-rituximab (BR) therapy completed a year ago. The serologic study revealed impaired responsiveness toward vaccines and prolonged high viral load after infection. BR therapy seemingly induced an immune escape. Prevention and treatment strategies for such vulnerable patients should be clarified immediately.

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