ORLANDO, Fla. — Syphilis, a sexually transmitted disease nearly eradicated 20 years ago, is back on the rise in Florida, particularly in Orange County. The infection increased by nearly 80% in the five years before 2022, the latest year of data available, according to the Centers for Disease Control and Prevention. Florida data shows the number of cases nearly doubled during that time, with 18,838 Florida residents living with syphilis in 2022. Orange County saw 1,830 cases in 2022. It had the sixth-highest syphilis rate of any Florida county that year, according to state health department dat…