To get it all under control you may want to replace to plywood roofing materials and replace the insulation in the attic. infections like mold cling to the insulation. Once you have this stuff its like an all or nothing job. the mold will keep on infesting the attic area. now that it has a foot hold. the insulation is a big part of the job. get it all clear then paint with a baby pink or light blue. add some strips of yellow. L.O.L. if you plan on selling the home some day. I would Employ a mold company/contractor after you complete every thing. give it a year and let things settle. then call the mold company to do a test and get an all clear.

Best

Ron
Excellence Exterminating and Thermal Imaging