• Jian-Guo Ren, Dong-Yan Li, Chang-Fei Wang, Jian-Hua Wu, Ying Wang, Yu-Jing Sun, Qian Zhang, Yao-Yong Wang, and Xin-Jian Chang.
• Department of Respiratory and Critical Care Medicine, Fenyang Hospital of Shanxi Province, Fenyang, China.
• Infect Dis (Lond). 2020 Aug 1; 52 (8): 571-574.

AbstractIntroduction: With the emergence of novel coronavirus disease 2019 (COVID-19) in many countries, medical resources currently focus on the treatment of confirmed patients and screening of suspected cases. Asymptomatic patients may be contagious, which makes epidemic control difficult. We describe an asymptomatic patient with a positive real-time polymerase chain reaction (RT-PCR) test in urine.Case report: An asymptomatic girl was identified during the epidemiological investigation of a confirmed COVID-19 patient. When admitted to the hospital on 24 February 2020, she had no clinical manifestations. A throat swab was negative for RT-PCR, but urine was positive. She was given antiviral and symptomatic supportive treatment. On 26 February, a throat swab RT-PCR was positive. RT-PCR in throat swabs and urine were negative on 3 and 5 March, and on 9 and 12 March, throat swabs were still negative. At follow-up on 26 March, she felt well, throat swab RT-PCR was negative, and isolation was lifted.Conclusion: The urine of asymptomatic patients may be contagious. RT-PCR in urine might be a useful supplement in screening when the RT-PCR is negative in throat swabs.

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