BOSTON (CBS) – Health officials have announced another human case of Eastern Equine Encephalitis in Massachusetts. A girl under 18 was diagnosed with EEE in early September and is currently hospitalized.

Based on the latest case, the EEE threat level has been raised in several towns in Franklin County and Worcester County. The EEE threat level has been raised to “Critical” in Athol, Orange, and Royalston, and to “High” in Erving, Petersham, Phillipston, Templeton, Warwick, Wendell, and Winchendon.

There have now been three confirmed human cases of EEE in Massachusetts residents this year, including one case that resulted in the death of a Worcester man in his 70s.