Tularemia is an infectious disease caused by a hardy bacterium, Francisella tularensis, found in animals, particularly especially rabbits, hares, and rodents. Symptoms depend upon how the person was exposed to tularemia but can include difficulty breathing, chest pain, bloody sputum, swollen and painful lymph glands, ulcers on the mouth or skin, swollen and painful eyes, and a sore throat. Symptoms usually appear from 3 to 5 days after exposures but sometimes will take up to two weeks. Tularemia is not spread from person to person, so people who have it need not be isolated.