牛痘——进行性(皮肤受累被描述为牛痘坏死)
进行性牛痘是一种不愈合的水疱性病变,在接种天花疫苗后出现并广泛扩散至免疫部位以外的皮肤,深入至骨骼和内脏。它几乎只发生在具有细胞介导免疫潜在缺陷的疫苗接受者身上。
Image courtesy of Dr. Allen W.Mathies of the Immunization Branch of the California Emergency Preparedness Office (Calif/EPO) via the Public Health Image Library of the Centers for Disease Control and Prevention.
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