Why polio victim suffer from paralysis?

Motor nerves are affected by polio which can lead to paralysis anywhere in the body with decreased movement seen in the arms and legs and most notably in the muscles that control breathing. Some individuals survived the polio epidemic.

1. How did polio cause paralysis?
2. Does polio usually cause paralysis?
3. Why does polio affect the legs?
4. How does polio paralyze muscles without invading them?
5. What are the 3 types of polio?
6. What caused polio virus?
7. Can polio come back?
8. What country did polio come from?
9. Can polio come back in old age?
10. Who invented polio vaccine?
11. Does polio cause nerve damage?
12. What years was polio active?
13. Where does polio exist today?
14. What neurons are affected by polio?
15. Is polio a neurological?

How did polio cause paralysis?

Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus. In about 0.5 percent of cases, it moves from the gut to affect the central nervous system, and there is muscle weakness resulting in a flaccid paralysis. This can occur over a few hours to a few days.

Does polio usually cause paralysis?

Polio is a viral disease which may affect the spinal cord causing muscle weakness and paralysis.

Why does polio affect the legs?

Related to this is the possible shortening of the limb. In a growing child, bone grows as a result of the muscle pull on it and/or weight bearing. Therefore, many who contracted polio as a growing child may have one arm or leg or foot that is shorter and smaller than the non-affected/less affected limb.

How does polio paralyze muscles without invading them?

When it does reach the CNS, inflammation and destruction of the spinal cord motor cells (anterior horn cells) occurs, which prevents them from sending out impulses to muscles. This causes the muscles to become limp or soft, and they cannot contract, a condition called flaccid paralysis and is the type found in polio.

What are the 3 types of polio?

There are three wild types of poliovirus (WPV) – type 1, type 2, and type 3. People need to be protected against all three types of the virus in order to prevent polio disease and the polio vaccination is the best protection.

What caused polio virus?

Polio is caused by 1 of 3 types of the poliovirus. It often spreads due to contact with infected feces. This often happens from poor handwashing. It can also happen from eating or drinking contaminated food or water.

Can polio come back?

But polio is making a comeback. There have been recent outbreaks around the world. Symptoms of polio can range from a mild, flu-like illness to serious muscle paralysis. Many people who survive polio are later at risk for PPS.

What country did polio come from?

The first epidemics appeared in the form of outbreaks of at least 14 cases near Oslo, Norway, in 1868 and of 13 cases in northern Sweden in 1881. About the same time the idea began to be suggested that the hitherto sporadic cases of infantile paralysis might be contagious.

Can polio come back in old age?

One possibility is that the polio virus becomes active again after decades of lying dormant in the victim's cells. Another possibility involves impaired production of hormones and neurotransmitters in brain.

Who invented polio vaccine?

The first polio vaccine, known as inactivated poliovirus vaccine (IPV) or Salk vaccine, was developed in the early 1950s by American physician Jonas Salk.

Does polio cause nerve damage?

A polio infection often damages or destroys many of these motor neurons. To compensate for the resulting neuron shortage, the remaining neurons sprout new fibers, and the surviving motor units enlarge.

What years was polio active?

From 1916 onward, a polio epidemic appeared each summer in at least one part of the country, with the most serious occurring in the 1940s and 1950s. In the epidemic of 1949, 42,173 cases were reported in the United States and 2,720 deaths from the disease occurred. Canada and the United Kingdom were also affected.

Where does polio exist today?

Polio is still endemic in three countries, i.e., Pakistan, Nigeria and Afghanistan and is eradicated from the rest of the world. Pakistan is considered as the exporter of Wild Polio Virus (WPV) with highest number of polio outbreaks among endemic countries.

What neurons are affected by polio?

Poliomyelitis affects only the lower motor neurons (ventral horn cells; Fig. 2).

Is polio a neurological?

Polio, or poliomyelitis, is an infectious viral disease that can strike at any age and affects a person's nervous system.