Cycle Thresholds Among Solid Organ Transplant Recipients Testing Positive for SARS-CoV-2.
2021
BACKGROUND: The optimal duration of Transmission-Based Precautions among immunocompromised patients with SARS-CoV-2 is unknown. METHODS: Retrospective review of patients with solid organ transplant with positive SARS-CoV-2 PCR result from nasopharyngeal specimens admitted to the hospital between 3/13/2020 and 5/15/2020. RESULTS: Twenty-one percent of solid organ transplant recipients with positive SARS-CoV-2 PCR detected ≥ 20 days after symptom onset (or after first positive test among asymptomatic individuals) had a low cycle threshold (i.e. high viral load). The majority of these patients were asymptomatic or symptomatically improved. CONCLUSIONS: Solid organ transplant recipients may have prolonged high viral burden of SARS-CoV-2. Further data are needed to understand whether cycle threshold data can help inform strategies for prevention of healthcare-associated transmission of SARS-CoV-2 and for appropriate discontinuation of Transmission-Based Precautions.
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