No abstract available
MeSH terms
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Adolescent
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Adult
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Age Factors
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Child
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Child, Preschool
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Disease Outbreaks
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Female
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Humans
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Male
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Pakistan
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Sex Factors
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Smallpox / epidemiology
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Smallpox / genetics*
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Smallpox / immunology
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Smallpox / mortality
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Time Factors
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Vaccination