More than 50 horses have died statewide this year from the worst outbreak in recent summers of an infection caught from mosquito bites. No people have gotten the illness, but the state confirmed 56 cases of Eastern equine encephalitis in horses as of early July. Animals from Orange, Volusia, Lake, Osceola and Polk counties were among the victims. For comparison, there were 18 cases in horses during all of 2007, and 17 in 2006.