Viral shedding pattern of severe fever with thrombocytopenia syndrome virus in severely ill patients: A prospective, Multicenter cohort study

• Published in: Heliyon 2024-07, Vol.10 (13), p.e33611, Article e33611
• Main Authors: Hu, Li-Fen, Bian, Ting-Ting, Chen, Qiang, Liu, Meng-Yu, Li, Jia-Jia, Kong, Qin-Xiang, Zhang, Jian-Kang, Wu, Jin, Cheng, Jun, Yu, Rui, Qiu, Yan-Qin, Gao, Yu-Feng, Chen, Guo-Sheng, Ye, Ying, Wu, Ting, Li, Jia-Bin
• Format: Article
• Language: English
• Subjects: Dabie bandavirus; Human-to-human transmission; Precaution measures; Severe fever with thrombocytopenia syndrome virus; Viral shedding
• ISSN: 2405-8440; 2405-8440
• DOI: 10.1016/j.heliyon.2024.e33611

Severe fever with thrombocytopenia syndrome (SFTS) is spreading rapidly in Asia. The pathway of SFTS virus shedding from patient and specific use of personal protective equipments (PPEs) against viral transmission have rarely been reported. The study was to determine SFTS virus (SFTSV) shedding pattern from the respiratory, digestive and urinary tract to outside in patients. Methods: Patients were divided into mild and severe groups in three sentinel hospitals for SFTS in Anhui province from April 2020 to October 2022. SFTSV level from blood, throat swabs, fecal/anal swabs, urine and bedside environment swabs of SFTS patients were detected by qRT-PCR. Specific PPEs were applied in healthcare workers contacting with the patients who had oropharyngeal virus shedding and hemorrhagic signs. A total of 189 SFTSV-confirmed patients were included in the study, 54 patients died (case fatality rate, 28.57 %). Positive SFTSV in throat swabs (T-SFTSV), fecal/anal swabs (F-SFTSV) and urine (U-SFTSV) were detected in 121 (64.02 %), 91 (48.15 %) and 65 (34.4 %) severely ill patients, respectively. The levels of T-SFTSV, F-SFTSV and U-SFTSV were positively correlated with the load of SFTSV in blood. We firstly revealed that SFTSV positive rate of throat swabs were correlated with occurrence of pneumonia and case fatality rate of patients (P