GPT and typhus: Laboratory findings consistent with murine typhus included leukocytes <6,000 cells/mm3 in 21 (23%) patients, platelets <120,000/mm3 in 49 (54%), aspartate aminotransferase >50 IU/L in 76 (84%), alanine aminotransferase >50 IU/L in 67 (74%), and serum sodium <133 mmol/L in 40 (44%).