CAMP HILL, Pa.--(BUSINESS WIRE)--Rite Aid Corporation (NYSE: RAD) today announced sales results for December. Monthly SalesFor the four weeks ended Dec. 27, 2014, same store sales increased 5.3 percent over the prior-year period. December front-end same store sales increased 1.7 percent. Pharmacy same store sales, which included an approximate 123 basis points negative impact from new generic introductions, increased 7.3 percent. Prescription count at comparable stores increased 5.1 percent ove