| Poliomyelitis |
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| • | Poliovirus,
person to person contact by |
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| infected
secretions of nose or mouth, |
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| feces |
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| • | Worldwide
epidemic 1840-1950’s |
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| • | Sub-clinical (95%
cases) |
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| • | Non-paralytic |
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| • | Paralytic |
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| – | Brain and spinal
cord involvement |
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