The flora of the skin shows qualitative and quantitative variations in different areas of the body and under differing conditions. Certain organisms are always present; others, including skin and soft-tissue pathogens, are transient. The normal flora may, on occasion, cause bothersome infections. The normal flora may offer protection against the more harmful species in ways that are yet to be defined.
皮肤菌群在身体的不同部位以及不同条件下呈现出质和量的变化。某些微生物始终存在;其他微生物,包括皮肤和软组织病原体,则是短暂存在的。正常菌群有时可能会引起令人烦恼的感染。正常菌群可能以尚未明确的方式提供针对更有害菌种的保护。