The incidence of dengue fever (DF) has increased dramatically over the last decade. It has become endemic in more than 100 countries and more than 2.5 billion people are at risk, mainly in Africa, the Americas, the western Mediterranean, South and East Asia and the west Pacific. Ethanolic extracts from the kernels of ripe fruits from the Indian lilac, Melia azedarach Linn. (Hindi ⎯ Bakain, Drek...