There were warnings that Dr. Amy Bishop "booby-trapped the science building with some sort of 'herpes bomb.'"

"Only people who had worked with Dr. Bishop would know that she had done work with the herpes virus as a post-doctoral student and had talked about how it could cause encephalitis. She had also written an unpublished novel in which a herpes-like virus spreads throughout the world, causing pregnant women to miscarry...."