Nearly 450 flu vaccinations were given Wednesday during an immunization event organized by the Forsyth County school system and the Georgia Department of Public Health.Connie Trent, health services coordinator for the school district, said about the same number of students received the injectable vaccination, 219, as those who received it in mist form during the event at Cumming Elementary.“We were pleased with the turnout for the no-cost flu vaccines, provided by the Forsyth County Health Department,” Trent said. “The convenience of holding it on an early release day allowed us to provide an extra defense against the flu for our school-age children.”According to the Centers for Disease Control and Prevention, or CDC, September is when flu vaccinations should begin, though they can continue through flu season, which can last as late as May. Flu season begins as early as October and activity typically peaks in January or February.