A study of antiviral phytochemicals identifies three compounds such as Cyanidin 3-O-glucoside chloride, Nigellone, and (R)-Glabridinas potent inhibitors of the dengue virus NS3 protease, which was a key step in the development of an effective vaccine for the mosquito-borne tropical disease dengue fever [76]. The gene discussed is KRAS; the disease is dengue disease.