Non-pharmacological, non-interventional, prospective, monocentric study involving the use of biological materials.
There will be two cohorts:
* COVID + cohort: 50 patients with positive nasopharyngeal swab and / or BAL.
* Control Cohort: 20 patients with non-SARS-CoV-2 related pneumonia.
The study involves analyzing biological samples collected for normal clinical practice.
In particular:
* blood samples will be used for PROS and Sflt1 assay, haematological, biochemical and coagulation tests.
* Samples deriving from nasopharyngeal swab or from Broncho-Alveolar Lavage (BAL) liquid will be used for Real time PCR analysis to evaluate the viral load of SARS CoV-2.