Vampire greens: dead bat found in Florida prepackaged salad

US health authorities on Monday studied the remains of a dead bat discovered inside a prepackaged salad mix sold in Florida for possible traces of the deadly rabies virus.The Fresh Express company, a subsidiary of Chiquita Brands, announced a "precautionary recall of a limited number of cases" of their prepackaged Organic Marketside Spring Mix, which had been distributed to Walmart stores across the southwestern United States.