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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.
Poliovirus is, however, strictly a human pathogen, and does not naturally infect any other species (although chimpanzees and Old World monkeys can be experimentally infected). [40] The CD155 gene appears to have been subject to positive selection. [41] The protein has several domains of which domain D1 contains the polio virus binding site.
A child receives oral polio vaccine during a 2002 campaign to immunize children in India. Poliovirus. Polio eradication, the goal of permanent global cessation of circulation of the poliovirus and hence elimination of the poliomyelitis (polio) it causes, is the aim of a multinational public health effort begun in 1988, led by the World Health Organization (WHO), the United Nations Children's ...
Poliovirus causes Polio, or Poliomyelitis, which is a disabling and life-threatening disease that causes paresthesia, meningitis and permanent paralysis. [16] Symptoms can include sore throat, fever, tiredness, nausea, headache and stomach pain although 72% of those that get infected will not display visible symptoms. [ 16 ]
A physical therapist assists two polio-stricken children while they exercise their lower limbs. Prior to the polio scares of the twentieth century, most rehabilitation therapy was focused on treating injured soldiers returning from war. The disabling effects of polio led to heightened awareness and public support of physical rehabilitation, and ...
Itzhak Perlman, a polio survivor, plays the violin while seated. Poliomyelitis (often simply called polio) is an acute viral infection that involves the gastrointestinal tract and occasionally the central nervous system. Poliovirus is acquired by faecal–oral or oral transmission.
The law of biogenesis, attributed to Louis Pasteur, is the observation that living things come only from other living things, by reproduction (e.g. a spider lays eggs, which develop into spiders). Fertilisation (Conception) – the beginning of an organism's life, initiated by the fusion of gametes resulting in the development of a new ...
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. [1] Viruses infect all life forms , from animals and plants to microorganisms , including bacteria and archaea .