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|World Polio Day by joshuapharm(m): 6:54am On Oct 23, 2013|
Since its launch at the World Health Assembly (WHA) in 1988, the Global Polio Eradication Initiative (GPEI) has reduced the global incidence of polio by more than 99% and the number of countries with endemic polio from 125 to 3. More than 10 million people are walking today who otherwise would have been paralysed.
That is an amazing result. Nevertheless, there is still a threat to the global community of ongoing poliovirus transmission in the last three endemic countries and the risk of circulating vaccine derived polioviruses (cVDPV).
Hence, on May 26th of 2012, the World Health Assembly declared ending polio as a “programmatic emergency for global public health” and the need for a comprehensive polio endgame strategy.
The 4 main objectives of the endgame strategy are:
Stop all wild polio virus transmission by the end of 2014 and new cVDPV outbreaks within 120 days of confirmation of the first case
Hasten the interruption of all poliovirus transmission and help strengthen immunization systems
Certify all regions of the world polio-free and ensure that all polio-virus stocks are safely contained
Ensure that a polio-free world is permanent and that the investment in polio eradication provides public health dividends for years to come
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What Is Polio? What Causes Polio?
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Polio, or poliomyelitis, is a highly contagious viral infection that can lead to paralysis, breathing problems, or even death. The term poliomyelitis is from the Greek poliós meaning "grey", myelós referencing the spinal cord, and -itis meaning inflammation.
Polio can be classified as either symptomatic or asymptomatic. About 95% of all cases display no symptoms (asymptomatic polio), and between 4% and 8% of cases display symptoms (symptomatic polio). Symptomatic polio can be broken down further into a mild form called nonparalytic or abortive polio and a severe form called paralytic polio (occurring in 0.1% to 2% of cases).
Paralytic polio also may be classified as:
Spinal polio - attacks motor neurons in the spinal cord and causes paralysis in arms and legs and breathing problems
Bulbar polio - affects neurons responsible for sight, vision, taste, swallowing, and breathing
Bulbospinal polio - both spinal and bulbar polio
Many people with nonparalytic polio are able to make a full recovery, while those with paralytic polio generally end up with permanent paralysis.
Polio used to be a big killer. Today (October 2013) polio has been eradicated in all but three countries worldwide - Nigeria, Pakistan and Afghanistan, according to the Bill and Melinda Gates Foundation and the United Nations. Who gets polio? Like many other infectious diseases, polio victims tend to be some of the most vulnerable members of the population. This includes the very young, pregnant women, and those with immune systems that are substantially weakened by other medical conditions. Anyone who has not been immunized against polio is especially susceptible to contracting the infection.
Additional risk factors for polio include traveling to places where polio is endemic or widespread, living with someone infected with polio, working in a laboratory where live poliovirus is kept, and having your tonsils removed. What causes polio? Polio is caused by the poliovirus, a highly contagious virus specific to humans. The virus usually enters the environment in the feces of someone who is infected. In areas with poor sanitation, the virus easily spreads through the fecal-oral route, via contaminated water or food. In addition, direct contact with a person infected with the virus can cause polio. What are the symptoms of polio? Polio, in its most debilitating forms, displays symptoms such as paralysis and death. However, most people with polio don't actually display any symptoms or become noticeably sick. When symptoms do appear, there are differences depending on the type of polio.
Nonparalytic polio (abortive poliomyelitis) leads to flu-like symptoms that last for a few days or weeks, such as fever, sore throat, headache, vomiting, fatigue, back and neck pain, arm and leg stiffness, muscle tenderness, muscle spasms, and meningitis.
Paralytic polio will often begin with symptoms similar to nonparalytic polio, but will progress to more serious symptoms such as a loss of muscle reflexes, severe muscle pain and spasms, and loose or floppy limbs that is often worse on one side of the body. How is polio diagnosed? Polio is often recognized because of symptoms such as neck and back stiffness, abnormal reflexes, and trouble with swallowing and breathing. A physician who suspects polio will perform laboratory tests that check for poliovirus using throat secretions, stool samples, or cerebrospinal fluid. How is polio treated? There is no cure for polio once a person becomes infected. Therefore, treatments are focused on increasing comfort, managing symptoms, and preventing complications. This may include providing bed rest, antibiotics for additional infections, pain killers, ventilators to help breathing, physiotherapy and moderate exercise, and a proper diet.
One treatment for lung paralysis due to polio was to place the patient into an iron lung - a device that would push and pull chest muscles to make them work. However, more modern portable ventilators and jacket-type ventilators are now employed. How can polio be prevented? Although polio essentially has been eradicated in the US since 1979 and in the Western Hemisphere since 1991, children and adults in Afghanistan, India, Nigeria, and Pakistan are still contending with the disease. There are two vaccines available to fight polio - inactivated poliovirus (IPV) and oral polio vaccine (OPV).
IPV, which consists of a series of injections beginning two months after birth and continuing until a child is 4 to 6 years old, is provided to most children in the United States. The vaccine is created from inactive poliovirus, but it is very safe and effective and cannot cause polio. OPV is created from a weakened or attenuated form of poliovirus, and it is the vaccine of choice in many countries because of its low cost, ease of administration, and ability to provide excellent immunity in the intestine. OPV, however, has been known to revert to a dangerous form of poliovirus that is able to paralyze its victim.
Polio vaccinations or boosters are highly recommended in anyone who is not vaccinated or is unsure if she is vaccinated.
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