Analysis of factors affected the SARS-CoV-2 viral shedding time of COVID-19 patients in Anhui, China: a retrospective study
Abstract Background The epidemic of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) has spread worldwide, but the factors that may affect the SARS-CoV-2 viral shedding time in coronavirus disease 2019 (COVID-19) patients were rarely reported. Methods We retrospectively recruited 40 confirmed common COVID-19 patients and classified them into two groups according to the SARS-CoV-2 viral shedding time (group A (less than 10 days) and group B (10 days or more)). The demographic, laboratory parameters and chest computed tomography (CT) features on admission and the 3 rd day after treatment were analyzed respectively. Results Fourteen patients were in group A and 26 patients in group B, the median SARS-CoV-2 viral shedding time of the two groups was 7 and 16 days respectively. Compared to the group A, the comorbidity, epidemiological risk history, serum glucose and CD4/8 on admission were significantly higher in the group B (P<0.05). On the 3 rd day after treatment, the group B got significantly higher IL-6, IL-2R, TNF-α and CD4/8, and lower platelet and CD8 + T lymphocyte counts than group A (P<0.05). Logistic regression analyses revealed that the higher epidemiological risk history, serum glucose and CD4/8 on admission were significantly associated with a longer SARS-CoV-2 viral shedding time (OR=7.5, 11.41, 9.21 respectively, P<0.05), as well as the higher TNF-α and lower CD8 + T lymphocytes on the 3 rd day after treatment (OR=2.36, 0.98 respectively, P<0.05). Conclusions Our study provides the evidence that the prolonged SARS-CoV-2 viral shedding time might be correlated with the patients’ epidemiological risk history, as well as the serum glucose and CD4/8 on admission, TNF-α and CD8 + T lymphocytes on the 3 rd day after treatment. Our result may help clinicians to distinguish the patients with a prolonged viral shedding time at the early stage.