A small study reported by researchers in Beijing and the United States found that 50% of patients treated for COVID-19 infection still carried the virus for up to eight days after their symptoms had disappeared. The authors, reporting their results in American Journal of Respiratory and Critical Care Medicine, say they don’t yet know whether the virus might still be capable of transmission at the late stages of disease. However, the results indicate that quarantine periods might need to be lengthened in some recovered patients.
Image: NIAID