机会性感染 Opportunistic infection
（重定向自Opportunistic disease）
机会性感染又名伺机性感染（英语：opportunistic infection）是指由机会性病原体引发的感染。这些病原体寄生于免疫功能正常的健康宿主时不致病，但会在宿主出现免疫缺陷时入侵宿主。
| 单词 | Opportunistic disease |
| 释义 |
Opportunistic disease
中文百科
机会性感染 Opportunistic infection（重定向自Opportunistic disease）
机会性感染又名伺机性感染（英语：opportunistic infection）是指由机会性病原体引发的感染。这些病原体寄生于免疫功能正常的健康宿主时不致病，但会在宿主出现免疫缺陷时入侵宿主。
英语百科
Opportunistic infection 机会性感染（重定向自Opportunistic disease）
An opportunistic infection is an infection caused by pathogens (bacteria, viruses, fungi, or protozoa) that take advantage of an opportunity not normally available, such as a host with a weakened immune system, an altered microbiota (such as a disrupted gut flora), or breached integumentary barriers. Many of these pathogens do not cause disease in a healthy host that has a normal immune system. However, a compromised immune system, a penetrating injury, or a lack of competition from normal commensals presents an opportunity for the pathogen to infect. |
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