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https://quizlet.com/134185176/flashcards

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Abortive Polio Symptoms: viral-like symptoms like fever fatigue, headache, sore throat, nausea and diarrhea.

Non-paralytic Polio Symptoms: Same as Abortive Polio with additional neurological symptoms such as sensitivity to light and neck stiffness.

Paralytic Polio Symptoms: 1st signs after the viral-like symptoms usually begin with loss of superficial reflexes and muscle pain or spasms.
Source:historyofvaccines

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Polio used to be very common in the United States and caused severe illness in thousands of people each year before polio vaccine was introduced in 1955.
Source:healthandwelfare
Today, only 2 countries (Afghanistan and Pakistan) remain polio-endemic, but polio is still global.
Source:worldhealthorganization

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Source: slideshare

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Polio may affect the spinal cord causing muscle weakness and paralysis. In 95% of all polio cases, the person has no symptoms at all.

The incubation period (time between exposure and first symptoms) is commonly 6-20 days with a range of 35 days.
Source:departmentofhealth

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Because of widespread vaccination, polio was eliminated in the Western Hemisphere in 1994. Today, it circulates in a handful of countries and there are programs being conducted to eliminate these last pockets of the virus. U.S. recommends that children to get the polio vaccine at 2-4 months and then twice before elementary school.
Source:historyofvaccines

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Polio struck in the early 20th century during the summer months.  The first polio vaccine was the inactivated polio vaccine. It was developed by Jonas Salk and came into use in 1955. The oral polio vaccine was developed by Albert Sabin and came into commercial use in 1961.
Source: historyofvaccines

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Polio is caused by the polio virus (poliomyelitis), a highly contagious virus specific to humans. The polio virus enters the body through the mouth, usually from hands contaminated with the stool of an infected person.
Source: healthline