More West Nile cases in Philly suburbs

More West Nile Virus cases have been confirmed in Philadelphia's suburbs.

The Pennsylvania Department of Environmental Protection cases said this week that new cases were detected in Montgomery and Chester counties, bringing the total cases in the region for 2015 to three.

Another new case was also confirmed in Cumberland County. Statewide, six human cases of the virus, which can be deadly, have occurred this summer.

The new cases involve a woman from Chester County who became ill on July 20 and a man from Montgomery County who became sick on Aug. 10, according to the department.

A positive test for another man from Montgomery County was reported last week. Erie and Venango counties have also had cases.

New Jersey has recorded three human West Nile cases this year, in Camden, Burlington and Bergen counties, according to the state Health Department.

The disease is transmitted when someone is bit by an infected mosquito and cause inflammation of the brain and spinal cord.

Most people infected don't develop symptoms, but those who do can show a fever, headache, stiff neck and muscle weakness.