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Transcript of Polio
How the body combats the disease
In the body..
Virus attempts to infect the body with polio, entering through the mouth or nose.
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Those with paralytic polio may require ongoing treatments such as:
To speed up their recovery, many may use treatments such as:
Many parents choose not to get their children inoculated as the world is almost clear of polio today. Though this leaves them vulnerable to the disease.
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The Spread of the Disease
There are three types of polio:
This infectious disease is known to affect thousands of people every year, causing extreme damage to the body with few resulting in paralysis. It has caused great commotion across the world as many have feared this possible infection. Where it was once one of the most formidable diseases, it is now one of the most scarce of all.
History/Origin of Polio
Viral infectious disease
Common in several countries
May lead to paralysis and death
The most mild and most common
Does not affect Central Nervous System
Most of the time symptoms don't show
95% of polio cases are of this type
Does not result in paralysis
Affects the central nervous system
1 in 2% who suffer from polio are infected with this type
This is the most severe type
Sorted into three types: spinal polio, bulba polio and bulbospinal polio
Affects less than 1% of polio infected individuals
Causes paralysis and sometimes death
can occur years after a person has recovered from polio
approximately 30% of survivors experience this
virus can appear worse with new symptoms
First significant outbreak was in the US, 1849
Spread to Europe, New York and North America
Was one of the most intimidating diseases
Micheal Underwood provided the first description of polio in 1789
Between 1940-1950 it affected over half a million people worldwide every year.
loose and floppy limbs
loss of reflexes
Post polio symptoms
Most of the time the body manages to defend itself against the virus
At times the virus overpowers the functioning cells in the body. This is too extreme for the body to handle
Through Fecal-oral transmission or oral-oral transmission
How Scientists are Using Technology to Find Cures for the Disease
The Effectiveness of the Treatments
First vaccine was the Inactivated Polio Vaccine (IPV) developed by Jonas Salk 1955
An injectable vaccine
Oral Polio Vaccine (OPV) produced by Albert Sabin in 1957
Said to be more advanced than the IPV as it was taken as a pill or by swallowing small droplets of syrup
plenty of rest
heating pads or warm towels
The 2 vaccines - IPV and OPV have contributed to the dramatic decrease of infected individuals.
IPV - proven 95% immunity to all three types of polio with protection against paralytic polio.
OPV - 90% against non-paralytic and paralytic polio, and 70% against sub-clinical polio.
Currently working on a cure which will be able to eradicate polio worldwide
Global Polio Eradication Initiative will use new technology to successfully eradicate polio
By tracking down vulnerable children from satellite-like photos with the new technology
breathing or swallowing problems
Those infected with subclinical polio may not experience any symptoms at all
Symptoms differ depending on the type of polio
Multiplies in the throat and gastrointestinal tract.
95% of those who are infected do not require treatments
In minor cases, virus travels to bloodstream and drifts the the Central Nervous System
The immune system responds quickly, terminating the viruses
The virus enters a cell where it makes thousands of copies
Virus overpowers the cell and destroys it, where it then does the same to other cells in the body
A potentially deadly disease
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