牛痘----泛发
全身性牛痘是疫苗接种后牛痘病毒经血行传播引起的弥漫性牛痘病变。尽管外观可能很严重,但全身性牛痘通常是良性的。
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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