１使用抗生素时机流行性出血热 (ＥＨＦ)时使用抗生素的时机或指征是发生继发细菌感染。但判断是否发生继发感染并非易事 ,一般从如下几个方面考虑 :(１)在临床上很难明确区分是属病毒感染还是继发细菌感染。尤其是ＥＨＦ并发细菌感染的早期阶段。所以 ,首先应对ＥＨＦ继发感染 1 The timing or indication of the use of antibiotics for the use of antibiotic-specific Epidemic Hemorrhagic Fever (EHF) is a secondary bacterial infection. But to determine whether secondary infection is not easy, in general, from the following aspects: (1) in clinical difficult to distinguish between a viral infection or secondary bacterial infection. Especially EHF concurrent bacterial infection in the early stages. Therefore, the first response to EHF secondary infection