Luiz Eduardo Ceccon Calil de Assumpção , Bruno Graciano Ponce Romeo , João Carlos de Campos Guerra , Luis Fernando Aranha Camargo , Marcelo Akira Nagaoka , Deyvid Emanuel Amgarten , Erick Gustavo Dorlass , Roberta Cardoso Petroni , Afonso Celso Almeida Cardoso , Renato de Mello Ruiz , Carolina Devite Bittante , Vanessa Damazio Teich , João Renato Rebello Pinho , André Mario Doi
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Abstract
Background
There is a significant concern of the pandemic impact of SARS-CoV-2 infection in immunocompromised patients. These patients can develop long COVID-19 due to impairment of cellular and humoral immunity. On the other hand, prolonged infection can lead to mutations in the SARS CoV-2 genome that can impact on the resistance to antiviral therapy. Remdesivir cases have been reported in patients receiving antiviral drug treatment.
Case presentation
A 46-year-old male with previous mantle cell lymphoma resolved by autologous bone marrow transplantation without other comorbidities had SARS-CoV-2 detected in February 2022 and received the recommended antiviral treatment with Remdesivir. COVID-19 evolved in four months with worsening of the symptoms, despite an initial rapid improvements and high RT-PCR Ct values. The patient was relieved from hospital care stable and well but still maintaining positive test results.
Conclusions
the patient presented prolonged COVID-19 with persistence of virus detected by RT-PCR for several months. The strain sequenced presented a mutation different from all reported previously. Although it was no possible to sequence the initial strain without these mutations, our data suggests that immunocompromised patient with prolonged COVID-19 may serve as reservoir for strains of SARS-CoV-2 with resistant components in his genome.
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