Clinical illness with viable SARS-CoV-2 virus presenting 72 days after infection in an immunocompromised patient.

We present a case of late symptom onset of COVID-19 infection 72 days after initial diagnosis in an immunocompromised 53-year-old man. SARS-CoV-2 was cultured from his sputum sample at this time, and genomic sequencing suggested reinfection was unlikely. After receipt of convalescent plasma, SARS-CoV-2 became undetectable by PCR 111 days after diagnosis, although SARS-CoV-2 antibodies remained not detectable. This case posed difficult public health management issues in a low prevalence COVID-19 setting as the person required extended home isolation given his prolonged SARS-CoV-2 PCR detection.