Smallpox is a serious and contagious disease that causes a rash on the skin.
Variola - major and minor; Variola
Smallpox was once found throughout the world, causing illness and death wherever it occurred. It mainly affected children and young adults. Family members often infected each other.
There are two forms of smallpox:
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Source: Breastcancer.org
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Source: HealthCentral Encyclopedia
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