Abstract: The present invention relates to treatment of coronavirus-induced disease, specifically COVID-19 disease, wherein the disease is characterized by mast cell degranulation, acute inflammation, pulmonary and/or vascular pathologies. The treatment comprises administering to a subject a composition comprising a mast cell stabilizer and/or inhibitor of mast cell products, such as TY-51469, nafamostat mesylate, cromolyn, or ketotifen. The invention also provides a method of diagnosing a subject as having SARS-CoV-2, the method comprising determining the level and/or activity of a mast cell protease such as chymase or tryptase in the serum from a subject.

Abstract: The present invention relates to the use of serotonergic compounds for the treatment of virus-induced thrombocytopenia. More particularly, the invention relates to methods of treating thrombocytopenia by blocking serotonin activity. For example, inhibitors of receptor 5HT2A and/or receptor 5HT1A and/or inhibitors of mast cell degranulation and/or inhibitors of serotonin uptake may be used. Preferably, the thrombocytopenia is induced by dengue or Japanese Encephalitis virus, and the inhibitors are preferably ketanserin, WAY-100135, sarpogrelate, or fluoxetine.

Abstract: The present invention relates to the use of serotonergic compounds for the treatment of virus-induced thrombocytopenia. More particularly, the invention relates to methods of treating thrombocytopenia by blocking serotonin activity. For example, inhibitors of receptor 5HT2A and/or receptor 5HT1A and/or inhibitors of mast cell degranulation and/or inhibitors of serotonin uptake may be used. Preferably, the thrombocytopenia is induced by dengue or Japanese Encephalitis virus, and the inhibitors are preferably ketanserin, WAY-100135, sarpogrelate, or fluoxetine.

Abstract: The present invention provides methods of determining whether a subject has a Dengue virus infection that is likely to develop into a life-threatening Dengue disease and methods of selecting a treatment regimen for a subject in need thereof who has been infected with a Dengue virus. The invention further provides a prognostic kit for distinguishing a subject who is likely to develop a mild Dengue disease from a subject who is likely to develop a life-threatening Dengue disease. The methods and kits of the invention can be used to differentiate DHF from DF and severe and non-severe forms of Dengue with high sensitivity and specificity.