An approach to lifting self-isolation for health care workers with prolonged shedding of SARS-CoV-2 RNA

ConclusionWe recommend lifting isolation if the RT-PCR Ct-value of a naso- or oropharyngeal swab sample is over 30. Positive results obtained from genes targeted with Ct-values> 30 correspond to non-viable/noninfectious particles that are still detected by RT-PCR. In case of Ct-values lower than 30, a blood sample from the patient should be tested for the presence of neutralizing antibodies. If positive, non-infectiousness can also be assumed.
Source: Infection - Category: Infectious Diseases Source Type: research