| Abstract: | Dear Editor,
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel coronavirus that causes Coronavirus Disease 2019 (COVID-19) (Yang and Wang, 2020), has spread to more than 200 countries and infected more than 9,000,000 people as of Jun 2020.Tens of thousands of patients with COVID-19 have recovered and been discharged from hospital.However, there are reports of recovered patients who subsequently tested positive for SARSCoV-2 after discharge (re-detectable positive, RP) (An et al., 2020;Lan et al., 2020), and this has led to increasing focus on the mechanism(s) underlying RP. |
