The etiology of fever was infection in 37% to 74%.Rates of antibiotic use for patients with a noninfectious cause of fever ranged from 29% to 55% for a mean duration of 6.6 to 9.6 days.

• 由于按照经验使用广谱的抗生素有可能造成耐药，所以应该掌握住院病人发热后经验性抗生素使用的适应证。