Viral shedding pattern of severe fever with thrombocytopenia syndrome virus in severely ill patients: A prospective, Multicenter cohort study
Li-Fen Hu,
Ting-Ting Bian,
Qiang Chen,
Meng-Yu Liu,
Jia-Jia Li,
Qin-Xiang Kong,
Jian-Kang Zhang,
Jin Wu,
Jun Cheng,
Rui Yu,
Yan-Qin Qiu,
Yu-Feng Gao,
Guo-Sheng Chen,
Ying Ye,
Ting Wu,
Jia-Bin Li
Affiliations
Li-Fen Hu
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
Ting-Ting Bian
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Qiang Chen
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Meng-Yu Liu
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Jia-Jia Li
Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
Qin-Xiang Kong
Department of Infectious Diseases, Chaohu Hospital of Anhui Medical University, Hefei, Anhui, China
Jian-Kang Zhang
Department of Infectious Diseases, Lu'an People's Hospital, Jin'an District, Lu'an, China
Jin Wu
Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
Jun Cheng
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Rui Yu
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Yan-Qin Qiu
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Yu-Feng Gao
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
Guo-Sheng Chen
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Ying Ye
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
Ting Wu
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China; Corresponding author. Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, China.
Jia-Bin Li
Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China; Corresponding author. Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, China.
Background: 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. Results: 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 < 0.0001). Specific precaution measures were applied by healthcare workers in participating cardiopulmonary resuscitation and orotracheal intubation for severely ill patients with positive T-SFTSV, no event of SFTSV human-to-human transmission occurred after application of effective PPEs. Conclusions: Our research demonstrated SFTSV could shed out from blood, oropharynx, feces and urine in severely ill patients. The excretion of SFTSV from these parts was positively correlated with viral load in the blood. Effective prevention measures against SFTSV human-to-human transmission are needed.
