To the Editor:Coronavirus disease 2019(COVID-19)has become a global pandemic.To minimize the risk of viral transmission in the community,some countries require two negative results of reverse transcription polymerase ...To the Editor:Coronavirus disease 2019(COVID-19)has become a global pandemic.To minimize the risk of viral transmission in the community,some countries require two negative results of reverse transcription polymerase chain reaction(RT-PCR)for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)RNA on nasopharyngeal swabs collected≥24 h apart for hospital discharge and discontinuation of isolation.Thus,understanding the time of viral clearance is essential.However,there are limited data reporting the viral clearance time and its risk factors in COVID-19 patients.[1,2]Moreover,the numbers of patients were limited and the risk factors of viral clearance were inconsistent in these studies.Therefore,we aim to determine the time and risk factors of viral clearance in throat swabs in COVID-19 patients.展开更多
基金This work was supported by grants from the Non-profit Central Research Institute Fund of Chinese Academy of Medical Sciences(No.2020-PT320-004)the National Key Research and Development Program of China(No.2020YFC0845500)the Science and Technology Department of Hubei Province(No.2020FCA039).
文摘To the Editor:Coronavirus disease 2019(COVID-19)has become a global pandemic.To minimize the risk of viral transmission in the community,some countries require two negative results of reverse transcription polymerase chain reaction(RT-PCR)for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)RNA on nasopharyngeal swabs collected≥24 h apart for hospital discharge and discontinuation of isolation.Thus,understanding the time of viral clearance is essential.However,there are limited data reporting the viral clearance time and its risk factors in COVID-19 patients.[1,2]Moreover,the numbers of patients were limited and the risk factors of viral clearance were inconsistent in these studies.Therefore,we aim to determine the time and risk factors of viral clearance in throat swabs in COVID-19 patients.
