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Poliomyelitis. Polio (poliomyelitis) mainly affects children under 5 years of age. One in 200 infections leads to irreversible paralysis. Among those paralysed, 5–10% die when their breathing muscles become immobilized. Cases due to wild poliovirus have decreased by over 99% since 1988, from an estimated 350 000 cases in more than 125 endemic ...
Poliomyelitis (polio) is a highly infectious viral disease that largely affects children under 5 years of age. The virus is transmitted by person-to-person spread mainly through the faecal-oral route or, less frequently, by a common vehicle (e.g. contaminated water or food) and multiplies in the intestine, from where it can invade the nervous system and cause paralysis.
Oral polio vaccine (OPV) contains an attenuated (weakened) vaccine-virus, activating an immune response in the body. When a child is immunized with OPV, the weakened vaccine-virus replicates in the intestine for a limited period, thereby developing immunity by building up antibodies. During this time, the vaccine-virus is also excreted.
Initial symptoms of polio include fever, fatigue, headache, vomiting, stiffness of the neck and pain in the limbs. In a small proportion of cases, the disease causes paralysis, which is often permanent. There is no cure for polio but it can be prevented by immunization.
Poliomyelitis (polio) Poliomyelitis (polio) is a highly infectious and sometimes fatal disease caused by a virus. It invades the nervous system and can cause irreversible paralysis. The disease usually affects children under five years of age. Polio cannot be cured, but there are safe vaccines that can effectively prevent the disease.
FACT SHEET:VACCINE-DERIVED POLIOVIRUSGlobal eforts to immunise children with the oral polio vaccine (OPV) have reduced wil. poliovirus cases by 99.9% since 1988. The vaccine is very safe and inter. upts person-to-person spread of polio. However, on rare occasions, in under-immunised populations, the live weakened virus originally contained in ...
Oral polio vaccine (OPV) contains an attenuated (weakened) vaccine-virus, activating an immune response in the body. When a child is immunized with OPV, the weakened vaccine-virus replicates in the intestine for a limited period, thereby developing immunity by building up antibodies. During this time, the vaccine-virus is also excreted.
Rationale: Poliomyelitis is targeted for eradication. Highly sensitive surveillance for acute flaccid paralysis (AFP), including immediate case investigation, and specimen collection are critical for the detection of wild poliovirus circulation with the ultimate objective of polio eradication. AFP surveillance is also critical for documenting ...
Since 2000, the Western Pacific Region has maintained polio-free status. Poliomyelitis is a highly infectious disease caused by a poliovirus. It mainly affects children under 5 years of age but also can affect older age groups. Polioviruses are spread by faecal-to-oral and oral-to-oral transmission. Lack of access to clean water and adequate sanitation is a major risk factor for transmission.
2 February 2023. Statement. Reading time: 12 min (3342 words) The thirty-fourth meeting of the Emergency Committee under the International Health Regulations (2005) (IHR) on the international spread of poliovirus was convened by the WHO Director-General on 25 January 2023 with committee members and advisers attending via video conference ...