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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.
Young children who contract polio generally develop only mild symptoms, but as a result they become permanently immune to the disease. [23] In developed countries during the late 19th and early 20th centuries, improvements were being made in community sanitation, including improved sewage disposal and clean water supplies. Better hygiene meant ...
It mainly affects children under the age of five, although it can also impact unvaccinated adults. ... – When were the last polio epidemics in the UK? During the early 1950s the UK was rocked by ...
Polio primarily infects children under 5 and has done so around the globe for millennia. ... It killed or paralyzed more than half a million people every year by the mid-20th century, and left ...
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Polio has been a common childhood vaccine since the 1950s, but do adults need a polio booster? What about if you’re planning to travel? Infectious disease experts break it down.
He and his children contracted polio in 1955 during a campaign for city council. His children recovered, however Collins used a wheelchair or crutches for the rest of his life. [125] Julian Critchley: 1930–2000 Writer, broadcaster and Conservative Member of Parliament. He contracted polio in his youth and was much later affected by paralysis ...
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