[Systemic and extrapulmonary manifestations of COVID-19].

Although fever and respiratory symptoms are the main clinical expression of COVID-19 disease, important extrapulmonary complications that affect the majority of the organs and systems may occur. Multisystemic involvement can mainly be attributed to the generalized location of ACE2 receptors throughout the body, which act as the main point of entry for the virus. Systemic manifestations may occasionally appear before the typical symptoms, although they generally occur later or are sequelae of the disease.

[Viral pneumonia. COVID-19 pneumonia].

Viruses are becoming more and more important as etiological agents of pneumonia, mainly due to improvements in diagnostic techniques. At present, they account for approximately one-third of community-acquired pneumonia cases. They tend to occur in children and elderly patients, causing anything from mild cases to severe cases which require intubation and intensive care.