The Maine Center for Disease Control and Prevention says West Nile Virus has been found in a second mosquito population, this time in Cumberland County. Officials said Thursday it’s the second mosquito pool from Maine to test positive this year. The first, confirmed last week, was found in York County. There has never been human case of West Nile in Maine. State epidemiologist Dr. Stephen Sears said the state continues to investigate two separate cases for the possible human exposure to West Nile and EEE. Testing is being conducted by a federal lab. Both viruses are transmitted by infected mosquitoes. EEE has historically been found in late-summer in Maine, and West Nile has been found in dozens of mosquito pools in neighboring New Hampshire.