Quick Answer: How Is Poliomyelitis Polio Most Commonly Spread?

Why did polio spread so easily?

The polio virus usually enters the environment in the feces of someone who is infected.

In areas with poor sanitation, the virus easily spreads from feces into the water supply, or, by touch, into food.

In addition, because polio is so contagious, direct contact with a person infected with the virus can cause polio..

What is the root cause of polio?

What causes polio? Polio is caused by the poliovirus. The virus enters the body through the mouth. It is spread through contact with the feces (stool) of an infected person or through exposure to phlegm or mucus when an infected person coughs or sneezes.

Can you get polio twice?

Does past infection with polio make a person immune? There are three types of polio virus. Lifelong immunity usually depends on which type of virus a person contracts. Second attacks are rare and result from infection with a polio virus of a different type than the first attack.

What is the incubation period of polio?

The incubation period for nonparalytic poliomyelitis is 3-6 days. For the onset of paralysis in paralytic poliomyelitis, the incubation period usually is 7 to 21 days. The response to poliovirus infection is highly variable and has been categorized on the basis of the severity of clinical presentation.

Where is Polio most commonly found in the world?

Four regions of the world are certified polio free—the Americas, Europe, South East Asia and the Western Pacific. Only three polio-endemic countries (countries that have never interrupted the transmission of wild poliovirus) remain—Afghanistan, Nigeria, and Pakistan.

When did they stop vaccinating for polio?

OPV was recommended for use in the United States for almost 40 years, from 1963 until 2000. The results have been miraculous: Polio was eliminated from the United States in 1979 and from the Western Hemisphere in 1991. Since 2000, only IPV is recommended to prevent polio in the United States.

Who is most likely to get polio?

Key factsPolio (poliomyelitis) mainly affects children under 5 years of age.1 in 200 infections leads to irreversible paralysis. … Cases due to wild poliovirus have decreased by over 99% since 1988, from an estimated 350 000 cases then, to 33 reported cases in 2018.More items…•

Is polio an airborne disease?

Poliovirus only infects people. It enters the body through the mouth and spreads through: Contact with the feces (poop) of an infected person. Droplets from a sneeze or cough of an infected person (less common).

What was polio season?

The major outbreaks would start around Memorial Day, as the virus thrived in the heat of the summer months — this was known as “polio season.” At the time it was not known how the disease was contracted, but since the progression was so aggressive during the warmer weather, beaches and swimming pools were closed in an …

Does the polio vaccine last a lifetime?

Higher-risk adults who have had one or two doses of polio vaccine in the past should get the remaining one or two doses. It doesn’t matter how long it has been since the earlier dose(s). Higher-risk adults who have had three or more doses of polio vaccine in the past may get a lifetime booster dose of IPV.

How long do polio survivors live?

For years, most polio survivors lived active lives, their memory of polio mainly forgotten, their health status stable. But by the late 1970s, survivors who were 20 or more years past their original diagnosis began noting new problems, including fatigue, pain, breathing or swallowing problems, and additional weakness.

Can you still get polio if vaccinated?

No, thanks to a successful vaccination program, the United States has been polio-free for more than 30 years, but the disease still occurs in other parts of the world. It would only take one person with polio traveling from another country to bring polio back to the United States.

How was polio stopped?

Several key strategies have been outlined for stopping polio transmission: High infant immunization coverage with four doses of oral polio vaccine (OPV) in the first year of life in developing and endemic countries, and routine immunization with OPV and/or IPV elsewhere.

What animal did polio come from?

The discovery by Karl Landsteiner and Erwin Popper in 1908 that polio was caused by a virus, a discovery made by inoculating macaque monkeys with an extract of nervous tissue from polio victims that was shown to be free of other infectious agents.