Researchers are attempting something unprecedented: using genetic engineering to curb Lyme disease, a tick-borne illness spreading across the U.S. Instead of targeting deer or ticks, they hope to release genetically altered wild mice that are immune to Lyme disease. This Sunday on 60 Minutes, Dr. Jon LaPook reports on how this first-of-its-kind approach could reshape the future of disease prevention. 60Minutes.com | 60 Minutes