a disease of rodents, lagomorphs, certain birds and sometimes humans, due to infection caused by the microorganism Pasteurella tularensis and transmitted by fleas and ticks; characterized by fever, headache, muscle pain, and nodule formations in the liver, spleen, and lymph nodes (Morris 1992).

Infectious bacterial disease of rodents that is transmissible to man by infected insects or direct contact. Symptoms include fever, headache, pneumonia, ulcerations in the digestive tract or ulcers on the skin, depending on the site of entry into the body. See Pneumonia; ulcers. Treatment includes antibiotics.

a highly infectious disease of rodents (especially rabbits and squirrels) and sometimes transmitted to humans by ticks or flies or by handling infected animals