May 5, 2021

Evaluation of Potential COVID-19 Recurrence in Patients with Late Repeat Positive SARS-CoV-2 Testing

Category: Article Summary

Topic: Vaccines and Immunity

Keywords (Tags): immunity, re-infection

• Among 23,176 patients with a positive SARS-CoV-2 in Utah between March and July 2020, 4 of 1,301 patients with at least one additional PCR test ≥60 days after the initial positive test were identified to have probable reinfection and 6 additional patients had possible reinfection. Reinfection was assessed using combined clinical and RT-PCR cycle threshold data. Median time to recurrent positive RT-PCR was 85 days (IQR 74-107). Among the 4 probable reinfection cases, 3 required a higher level of medical care compared to their first infection.

Peltan et al. (May 4, 2021). Evaluation of Potential COVID-19 Recurrence in Patients with Late Repeat Positive SARS-CoV-2 Testing. PLOS ONE. https://doi.org/10.1371/journal.pone.0251214