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Viral Immunol ; 34(6): 416-420, 2021.
Article in English | MEDLINE | ID: covidwho-1475758


Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which has infected millions of individuals in the world. However, the long-term effect of SARS-CoV-2 on the organs of recovered patients remains unclear. This study is to evaluate the impact of SARS-CoV-2 on the spleen and T lymphocytes. Seventy-six patients recovered from COVID-19, including 66 cases of moderate pneumonia and 10 cases of severe pneumonia were enrolled in the observation group. The control group consisted of 55 age-matched healthy subjects. The thickness and length of spleen were measured by using B-ultrasound and the levels of T lymphocytes were detected by flow cytometry. Results showed that the mean length of spleen in the observation group was 89.57 ± 11.49 mm, which was significantly reduced compared with that in the control group (103.82 ± 11.29 mm, p < 0.001). The mean thicknesses of spleen between observation group and control group were 29.97 ± 4.04 mm and 32.45 ± 4.49 mm, respectively, and the difference was significant (p < 0.001). However, no significant difference was observed in the size of spleen between common pneumonia and severe pneumonia (p > 0.05). In addition, the decreased count of T lymphocyte was observed in part of recovered patients. The counts of T suppressor lymphocytes in patients with severe pneumonia were significantly decreased compared with those with moderate pneumonia (p = 0.005). Therefore, these data indicate that SARS-CoV-2 infection affects the size of spleen and T lymphocytes.

COVID-19/immunology , SARS-CoV-2 , Spleen/pathology , T-Lymphocytes/immunology , Adult , Aged , Female , Humans , Lymphocyte Count , Male , Middle Aged , Young Adult