A horse in Franklin County that was infected with the West Nile virus has died, state health officials said Friday.
In a news release to 22News, the Massachusetts Department of Health also announced four new human cases of the West Nile Virus in the state, bringing the total number of reported cases to 42 for 2018.
The human cases include a woman in her 50s from Middlesex County who was hospitalized, two men in their 60s from Middlesex County who were hospitalized and another woman in her 60s from Plymouth County who has been hospitalized.
State health officials said this is the highest number of cases Massachusetts has ever recorded in a single year for West Nile virus infections.
The previous highest record was 33 cases in 2012.
In 2017, there were six human cases of West Nile virus infection identified in the state.