Eosinopenia as an early diagnostic marker of COVID-19 at the time of the epidemic

The Coronavirus Disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread rapidly worldwide since its outbreak in December 2019. COVID-19 may present with varying degrees of disease severity, from asymptomatic or mild upper respiratory illness to multiple organ failure with fatal outcome. SARS-CoV-2 is more contagious than SARS-CoV or the Middle East Respiratory Syndrome Coronavirus (MERS-CoV)....