Persistence of Infectivity in Elderly Individuals Diagnosed with SARS-CoV-2 Infection 10 Days after Onset of Symptoms: A Cross-Sectional Study.

We performed viral culture of nasopharyngeal specimens in individuals aged 79 and older, infected with SARS-CoV-2, 10 days after symptom onset. A positive viral culture was seen in 10/22 participants (45%), including 4/12 (33%) individuals with improving symptoms. This small study suggests that infectivity may be prolonged among older individuals.