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Clinical features and sexual transmission potential of SARS-CoV-2 infected female patients: a descriptive study in Wuhan, China

By Pengfei Cui, Zhe Chen, Tian Wang, Jun Dai, Jinjin Zhang, Ting Ding, Jingjing Jiang, Jia Liu, Cong Zhang, Wanying Shan, Sheng Wang, Yueguang Rong, Jiang Chang, Xiaoping Miao, Xiangyi Ma, Shixuan Wang

Posted 27 Feb 2020
medRxiv DOI: 10.1101/2020.02.26.20028225

BackgroundAs of March 2, 2020, SARS-CoV-2 has infected more than 80174 people and caused 2915 deaths in China. This virus rapidly spreads to 56 countries worldwide. Thus, in order to effectively block its transmission, it is urgent to uncover all the possible transmission routes of SARS-CoV-2. MethodsFrom January 28 to February 18, 2020, 35 female patients diagnosed with COVID-19 in Tongji Hospital were included in this descriptive study. The gynecologic history, clinical characteristics, laboratory findings and chest computed tomography (CT) of all patients were recorded in detail. To examine whether there is sexual transmission through vaginal from female to her partner, we employed real-time polymerase chain reaction testing (RT-PCR) to detect SARS-CoV-2 in vaginal environment (including vaginal discharge, cervical or vaginal residual exfoliated cells) and anal swab samples, and inquired recent sexual behaviors from the patients. FindingsThe age range of the 35 patients with COVID-19 was 37-88 years. Over 50% patients infected with SARS-CoV-2 had chronic diseases. We tested the vaginal environment and anal swabs from the 35 female patients with COVID-19 and found that only an anal swab sample from one patient was positive for SARS-CoV-2. All the samples from vaginal environment were negative for SARS-CoV-2. The infection rate of the patients sexual partner was 42{middle dot}9%. Additionally, two female patients admitted having sex with their partners during a possible infection incubation period, while one patients partner was uninfected and the other patients partner was diagnosed with COVID-19 (after the diagnosis of the female patient). ConclusionNo positive RT-PCR result was found in the vaginal environment perhaps due to the lack of ACE2 expression, which is the receptor of SARS-CoV-2, in the vagina and cervix tissues (human protein atlas). The results from this study show no evidence of transmission of SARS-CoV-2 through vaginal sex from female to her partner. However, the risk of infection of non vaginal sex and other intimate contacts during vaginal sex should not be ignored. FundingThis work was financially supported by the Clinical Research Pilot Project of Tongji hospital, Huazhong University of Science and Technology (No. 2019CR205).

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