dengue: an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
communicable disease: a disease that can be communicated from one person to another
strike: (baseball) a pitch that the batter swings at and misses, or that the batter hits into foul territory, or that the batter does not swing at but the umpire judges to be in the area over home plate and between the batter's knees and shoulders