Certain types of mold can be deadly, so proceed with caution.
That said, there are many homes in this area that have mold issue. Sometimes it is due to lack of heat during the winter months. This can also cause hairline cracks in pipes. Before purchasing any home, make sure you have great professionals to work with. If you decide to go forward with this home and need a mold remediator, email me and I will gladly provide you with their contact information.
Make sure you use a qualified home inspector as well.