继发性霉菌感染或称二重感染，属于菌交替症的一种，一般不包括皮肤霉菌病，而属于深部霉菌感染。由于患者菌群（丛）失调，抵抗力降低而继发。可为局部感染或全身感染，若为全身性霉菌感染，则病情危重，常为终末感染，加之诊断不易，治疗困 Secondary fungal infection or double infection, is a kind of bacterial alternation, usually does not include skin fungal disease, which belongs to deep mold infection. As the patient flora (plexus) disorders, decreased immunity secondary. For local infection or systemic infection, if the systemic fungal infection, the critical condition, often terminal infection, combined with the diagnosis is not easy, the treatment of sleepy