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Clinical features of SARS-CoV-2 Omicron variant infection in children after hematopoietic stem cell transplantation |
WU Shuai, ZENG Minhui, HE Jing, TIAN Xin, CHEN Keke, HE Xiangling |
Department of Pediatric Hematology and Oncology, Children's Medical Center of Hunan Provincial People's Hospital/The First Affiliated Hospital of Hunan Normal University, Changsha 410002, China |
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Abstract Objective To investigate the difference of clinical features between children who received hematopoietic stem cell transplantation and normal children without underlying diseases infected with Omicron variant of SARS-CoV-2(hereinafter referred to as Omicron). Methods Clinical data on Omicron-infected children from 2022-12-01 to 2023-1-20 were analyzed retrospectively. Eighty-one children who had received hematopoietic stem cell transplants were included in the transplant group, and 507 normal children without underlying medical conditions were included in the normal group. The differences in clinical characteristics between the two groups were compared. Results There were no significant differences in age or gender between the transplant group and the normal group. The main symptom of Omicron infection in both groups was fever, 64 cases (79.0%) in the transplantation group compared with 389 cases (76.7%) in the normal group. The second most common symptom was cough, 57 cases (70.4%) in the transplantation group were compared with 306 cases (60.4%) in the normal group. There was no statistical significance in fever and cough symptoms between the two groups. At the same time, there were no significant differences between the transplantation group and the normal group in high fever (34.6% vs 36.7%), dyspnea (4.9% vs 2.8%), nasal congestion (43.2% vs 46.5%), and sore throat (35.8% vs 28.4%). In addition, gastrointestinal discomfort (50.6% vs 27.2%), sepsis (3.7% vs 0.2%), respiratory support (3.7% vs 0%), and total disease duration over 2 weeks (43.2% vs 10.1%) in the transplant group were significantly higher than those in the normal group. Conclusion Omicron infection was mainly mild in both the transplant and normal groups, but the incidence of moderate to severe infection was higher in the transplant group than in the normal group, and the duration of the disease was longer. Infected children following hematopoietic stem cell transplantation should still be actively prevented from serious infections and serious adverse events.
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Received: 17 February 2023
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