Research progress on detection methods of the asymptomatic COVID- 19 infected persons

The global pandemic of COVID-19 has brought great harm and challenges to many countries and regions around the world.The majority of COVID-19 patients have typical clinical manifestations,but the number of asymptomatic infections is increasing as COVID-19 research continues and SARS-CoV-2 testing improves.Many asymptomatic COVID-19 patients with no obvious clinical symptoms are able to transmit the virus to others due to the presence of SARS-CoV-2 in their bodies,thus greatly accelerating the worldwide pandemic and posing great difficulty and threat to global epidemic prevention and control.Therefore,early detection and identification of asymptomatic infected persons through various testing methods are effective measures to control the COVID-19 pandemic.This article will provide a brief review of the available methods and techniques for detecting asymptomatic COVID-19 patients.