Defining the clinical phenotype of COVID-19 in children. (Special Issue:2020 Update from The Italian Society of Pediatric Allergy and Immunology.)

On January 7, 2020, a novel coronavirus (SARS-CoV-2) was identified as the causative agent of a cluster of pneumonia of unknown origin detected in Wuhan City by Chinese authorities Since SARS-CoV-2 discovery, the corresponding disease (COVID-19) has rapidly expanded throughout the globe, making as a consequence the World Health Organization (WHO) declaring a pandemic As of May 19, 2020, over 4 806 299 cases of COVID-19 had been confirmed worldwide, with more than 318 599 deaths