[COVID-19, state of medical knowledge].

Coronavirus disease 2019 caused one of the largest health crises ever known. It is primarily defined as a viral respiratory infection, and the symptomatology can take various forms, particularly among the elderly population, who are most at risk of severe disease. Despite rapid scientific advances, therapeutics unfortunately are still very limited, especially for this category of patients. The priority is therefore to adopt and comply with preventive measures as far as possible, while awaiting possible progress.