As with many recent pathologies, COVID-19 (CORONAVIRUS Disease-2019) has biological characteristics as well as clinical and medical imaging manifestations which are truly unique. In some subjects, COVID-19 is the result of infection by Severe Acute Respiratory Syndrome Corona-VIRUS-2 (SARS-CoV-2), the seventh type of coronavirus able to infect humans thus far. The infection spread rapidly throughout the world, beginning from China. The virus is highly transmissible, mainly by means of droplets emitted when speaking or breathing, or by direct contact (even if the virus is also detectable in feces in more advanced stages of the infection, which suggests the possibility of infection by an oral-fecal route).
