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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.
Most cases of polio are in children under 5 years old, but experts say being vaccinated protects against the potentially fatal disease. (Photo: Getty Images) (Getty Images/iStockphoto)
According to the CDC, 99% of children who get the recommended polio doses are protected against disease, but protection takes weeks to build up. Racaniello estimated that people have 50% to 60% ...
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.
Varicella spreads person to person through the air from coughing or sneezing, touching or breathing in the virus that comes from the chickenpox blisters, and can be spread from people with shingles. It takes 10 to 21 days after exposure to develop symptoms and it lasts about 5–10 days.
Post-polio syndrome (PPS, poliomyelitis sequelae) is a group of latent symptoms of poliomyelitis (polio), occurring in more than 80% of polio infections. The symptoms are caused by the damaging effects of the viral infection on the nervous system and typically occur 15 to 30 years after an initial acute paralytic attack.
Unvaccinated children are “at potential risk of exposure and the potential for paralytic polio,” he continued. Here’s a look at the disease’s trend over the past 100 years or so ...
Polio-like syndrome is a general description of a group of symptoms which mimic polio, including rarely permanent paralysis. Various triggers have been found, including some viruses from the same virus group as polio: enterovirus 68, enterovirus 71, and coxsackievirus A7. [1] [2] These are suspected in many cases of acute flaccid myelitis.