As far as I know, there isn’t currently an outbreak of an English ivy disease in southeastern Pennsylvania. It sounds like something is seriously wrong with your plant, though.
My answer to a previous question about dying ivy might be helpful for you. A local agricultural organization or college or a plant nursery or garden store in your area might be able to give you more specific help with respect to your situation. The Pennsylvania Horticultural Society (phsonline.org) might be able to give you information and help, too.