<p>THE Philippines stood firm today on its ban on the world’s first dengue vaccine while declaring a nationwide epidemic from the mosquito-borne disease that it said has killed hundreds this year.</p> <p>Dengue incidence shot up 98% from a year earlier to 146,062 cases from January 1 to July 20, causing 662 deaths, Health Secretary Francisco Duque told a news conference in which he announced a “national dengue epidemic”.</p>