[Covid19 in a polypathological subject].

Unlabelled: In December 2019, an outbreak of pneumonia due to the 2019 novel coronavirus, SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), broke out in Wuhan, Hubei, China. This betacoronavirus causes a sometimes severe respiratory pathology, named COVID-19 by the World Health Organization (WHO). The WHO declared COVID-19 as a pandemic in March 2020.