In early December 2019, the 2019 novel coronavirus (COVID-19) was identified as the agent responsible for the first pneumonia cases of unknown origin in Wuhan, the capital of the Hubei region in China. The virus has been identified as a novel enveloped RNA betacoronavirus2 , that has been promptly named SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2). The World Health Organization (WHO), on January 12, 2020 declared the COVID-19 a public health emergency of international concern. On March 11, the WHO made the assessment that COVID-19 can be characterized as a pandemic.
Papa Giovanni XXIII Bergamo Hospital at the time of the COVID-19 outbreak: letter from the warfront.