Older age is associated with sustained detection of SARS-CoV-2 in nasopharyngeal swab samples
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Abstract
PCR testing of nasopharyngeal swab samples is used for the diagnosis of coronavirus disease 2019 (COVID-19) and for determining timing of discharge. The viral load usually declines at convalescent phase, but sometimes remained positive for a long time even after relief of symptoms. In this study, we identified older age is associated with sustained detection of SARS-CoV-2 in nasopharyngeal swab samples.
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- last seen: 2026-05-19T01:45:01.086888+00:00