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In 2018, there were 33 cases of wild polio, and 103 cases of vaccine-derived polio. [5] This is down from 350,000 wild cases in 1988. [ 2 ] In 2018, the disease was only spread between people in Afghanistan and Pakistan .
Poliomyelitis (/ ˌ p oʊ l i oʊ ˌ m aɪ ə ˈ l aɪ t ɪ s / POH-lee-oh-MY-ə-LY-tiss), commonly shortened to polio, is an infectious disease caused by the poliovirus. [1] Approximately 75% of cases are asymptomatic; [5] mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe symptoms develop such as headache, neck stiffness, and paresthesia.
Roberts contracted polio at the age of fourteen in 1953, two years before the Salk vaccine ended the epidemic. [1] He spent eighteen months in hospitals and returned home paralyzed from the neck down except for two fingers on one hand and several toes. He slept in an iron lung at night and often rested there during the day.
The virus infects the throat and intestines, and can cause flu-like symptoms. Paralysis from the polio virus is rare. This year, polio cases have been detected in New York state, London and Jerusalem.
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The virus that causes polio – a disease which had not been seen in the U.S. in nearly a decade – has recently been detected in New York City. Elaine Quijano has more.
In children, paralysis due to polio occurs in one in 1,000 cases, while in adults, paralysis occurs in one in 75 cases. [24] By 1950, the peak age incidence of paralytic poliomyelitis in the United States had shifted from infants to children aged 5 to 9 years; about one-third of the cases were reported in persons over 15 years of age. [ 25 ]
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