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Polio, or poliomyelitis, is a disease that spreads from person to person and is caused by the poliovirus. Poliovirus is highly contagious and attacks the nervous system. In serious cases, it can cause paralysis and even death. Polio is now rare in the US and UK due to the polio vaccine, but it still exists in some parts of the world. Post-polio syndrome (PPS) is a condition that affects polio survivors many years after recovery, causing muscle weakness, fatigue, atrophy, and scoliosis. While PPS is rarely life-threatening, it can significantly impact a person's ability to function independently.
| Characteristics | Values |
|---|---|
| What is Polio? | A serious disease caused by the poliovirus that attacks the nervous system and can lead to paralysis or death. |
| How does it spread? | Polio is highly contagious and spreads through contact with contaminated food, water, or hands. It mainly affects children under 5, but anyone unvaccinated is at risk. |
| Symptoms | Mild or no symptoms in most cases, but can lead to paralysis, muscle weakness, and shrinking of muscles. |
| Post-Polio Syndrome (PPS) | A condition affecting polio survivors years after recovery, causing muscle weakness, pain, fatigue, and potential breathing difficulties. |
| Treatment | No cure for polio or PPS, but treatments like physical therapy, medication, and lifestyle changes can help manage symptoms. Vaccines are the best prevention. |
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What You'll Learn
- Polio is a highly contagious disease caused by the poliovirus
- Polio can cause paralysis or death
- Post-polio syndrome (PPS) is a condition that affects polio survivors years after recovery
- PPS causes muscle weakness, pain and fatigue
- There is no cure for polio or PPS, but treatments are available to manage symptoms
Polio is a highly contagious disease caused by the poliovirus
Polio, or poliomyelitis, is a highly contagious disease caused by the poliovirus. It is a viral infection that spreads from person to person and attacks the nervous system. While polio has been largely eradicated in the US due to the polio vaccine, it still exists in some countries, including Afghanistan, Pakistan, Liberia, and Madagascar.
The poliovirus is transmitted when food, water, or hands contaminated with the faeces or throat/nasal secretions of an infected person come into contact with an uninfected person's mouth. People are most infectious 7-10 days before and after the onset of symptoms, but they can remain infectious as long as the virus is present in their faeces, which may be up to 6 weeks.
Symptoms of polio typically appear between 3 and 21 days after infection, and many infected individuals may not experience any symptoms or only mild ones. However, in severe cases, polio can cause paralysis, muscle weakness, and even lead to death. Paralytic polio can result in long-term disability, and if the paralysis affects the muscles involved in breathing, it can become life-threatening.
Post-polio syndrome (PPS) is a condition that can affect polio survivors many years after their initial recovery, typically 10 to 40 years later. PPS causes gradual muscle weakness and atrophy, pain in the muscles and joints, and fatigue. While PPS is not contagious, it can significantly impact a person's ability to function independently and may require various treatments and lifestyle changes to manage the symptoms.
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Polio can cause paralysis or death
Poliomyelitis, commonly known as polio, is a highly infectious disease caused by the poliovirus. It is transmitted by person-to-person spread, mainly through the faecal-oral route, and invades the nervous system. While most cases of polio are asymptomatic or mild, the disease can sometimes lead to paralysis or death.
Paralysis is a rare but serious complication of polio. It occurs when the poliovirus attacks the motor neurons of the central nervous system, resulting in the loss of function in the affected muscles. The paralysis can develop within 7 to 21 days of infection and is usually irreversible. It typically affects the legs, but it can also involve the arms, hands, and feet. In some cases, the muscles involved in breathing and swallowing may be affected, leading to respiratory failure and, potentially, death.
The risk of paralysis is higher in children aged five to nine years, and the rate of paralysis due to polio infection increased during the early 20th century when the peak age incidence shifted to this age group. During the 1952 polio epidemic in the United States, of the nearly 58,000 cases reported, over 21,000 people were left with mild to disabling paralysis.
Death can occur in extreme cases of polio, with approximately 5-10% of individuals with paralytic polio dying due to the paralysis of muscles used for breathing. The case fatality rate varies by age, with 2-5% of children and up to 15-30% of adults succumbing to the disease. The provision of respiratory support can significantly reduce fatalities, dropping the rate to around 15%.
While polio has been eradicated in many regions due to vaccination efforts, it still persists in some countries, and the risk of a global resurgence remains if the disease is not eliminated from its remaining strongholds. Post-polio syndrome (PPS) is a rare condition that can occur in individuals who have previously had polio, causing gradual muscle weakness and atrophy that can significantly impact their ability to function independently.
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Post-polio syndrome (PPS) is a condition that affects polio survivors years after recovery
The first sign of PPS is often a gradual weakening of muscles that were previously affected by polio. The severity of symptoms can vary, but they typically include muscle weakness, muscle and joint pain, fatigue, and tiredness. In some cases, PPS can lead to difficulty breathing and swallowing, which can result in serious problems such as chest infections. While PPS is rarely life-threatening, the symptoms can significantly interfere with a person's ability to function independently.
The exact cause of PPS is still unknown. One theory suggests that it is related to the recovery process from the initial polio infection. During recovery, nerve cells (neurons) in the affected muscles may regrow many smaller branches (dendrites) from the large branches (axons) of nerve cells. These dendrites take over the function of the neurons that were damaged or destroyed by the poliovirus. However, over time, the nerve cells may become overworked, leading to their gradual breakdown and the weakening of the entire muscle. Another theory suggests that the poliovirus may remain dormant in the body and become reactivated at a later stage, causing PPS.
Currently, there is no cure for PPS, but treatments are available to help manage the symptoms and improve quality of life. These include mobility aids, occupational therapy, speech therapy, and lifestyle changes such as a healthy diet, weight management, and getting enough rest. Additionally, non-fatiguing exercises designed to improve muscle strength and reduce fatigue can be beneficial for people with PPS.
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PPS causes muscle weakness, pain and fatigue
Polio is a disease caused by the poliovirus. It can cause paralysis or even lead to death. However, the polio vaccine has essentially eradicated polio from the US. Polio still exists in some other countries, and cases of post-polio syndrome (PPS) are observed there.
PPS is a condition that affects the nerves and muscles of people who have had polio. It usually occurs 10 to 40 years after recovery from the initial polio infection. PPS is rarely life-threatening, but its symptoms can significantly interfere with a person's ability to function independently.
PPS causes muscle weakness, pain, and fatigue. Muscle weakness is the most common symptom of PPS. It is characterised by a gradual loss of muscle strength, with muscles becoming weaker over time. This can lead to difficulty in performing daily tasks and reduced mobility. People with PPS may also experience muscle pain and joint pain. Fatigue is another common symptom of PPS, with people often feeling exhausted and tired.
The treatment for PPS focuses on managing the condition and improving quality of life. Exercise programs, physical therapy, and assistive devices such as canes, walkers, and wheelchairs can help improve muscle strength and mobility. Occupational therapy can aid in adapting to daily tasks, while speech therapy can address swallowing difficulties. Medicines are also available to ease pain and fatigue associated with PPS.
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There is no cure for polio or PPS, but treatments are available to manage symptoms
Polio, or poliomyelitis, is a disease caused by the poliovirus, which infects the throat and intestines, causing flu-like symptoms. It sometimes spreads to the brain and spinal cord, which can paralyze the muscles used for breathing, speaking, swallowing, and moving limbs. Most people exhibit mild or no symptoms, but some develop permanent paralysis or weakness. There is no cure for polio.
Post-polio syndrome (PPS) is a condition that causes muscle weakness and atrophy that can affect people who have had polio, usually occurring 10 to 40 years after recovery from the initial infection. The severity of symptoms can vary, but they usually develop gradually and include muscle weakness and atrophy, pain and twitches, joint pain, and skeletal deformities such as scoliosis. PPS can also cause breathing and swallowing difficulties, which can lead to serious problems such as pneumonia and chest infections. While PPS is rarely life-threatening, it can significantly impact a person's ability to function independently.
Currently, there is no cure for polio or PPS. However, treatments are available to help manage symptoms and improve patients' quality of life. Physical and occupational therapy can improve function and prevent injuries, and mobility devices can assist with movement and reduce muscle exhaustion. Speech therapy can help with swallowing difficulties. Additionally, lifestyle changes such as a healthy diet, weight management, quality sleep, and abstinence from smoking can help manage symptoms and maintain overall health. Counselling and support groups can also aid patients and their families in adjusting to life with PPS.
The only way to prevent polio and, consequently, PPS, is through vaccination. The polio vaccine has eradicated polio from the US, but the disease still exists in some countries, and cases of PPS still occur.
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Frequently asked questions
Polio, or poliomyelitis, is a serious and contagious disease caused by the poliovirus. It is a viral infection that attacks the nervous system and can lead to paralysis or even death. It is spread through contact with contaminated food, water, or hands.
Post-polio syndrome is a condition that affects people who have had polio, causing gradual muscle weakness and atrophy that can interfere with daily life. PPS usually occurs 10 to 40 years after recovering from the initial polio infection. There is currently no cure for PPS, but treatments and lifestyle changes can help manage the symptoms.
The best way to prevent polio and PPS is by getting vaccinated. The polio vaccine has eradicated polio in many countries, but it still exists in some parts of the world, and travelers can spread the virus. Maintaining a high level of community immunity through vaccination is crucial to keeping people safe from the poliovirus.
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