这个词是什么意思？
An acute, highly contagious, often fatal infectious disease caused by an orthopoxvirus characterized by a biphasic febrile course and distinctive progressive skin eruptions. Vaccination has succeeded in eradicating smallpox worldwide. (Dorland, 28th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012899 · MeSH 2026。
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