Polio virus vaccine schedule, definition, causes and symptoms

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Polio virus vaccine schedule, definition, causes and symptoms

Polio is a historical example of an infectious disease that shows the harmful effects of viral infections as well as the improvements of modern medicine. Protecting public health needs knowledge of the polio virus vaccine schedule, and the significance of immunization. Take a comprehensive look into the complexities surrounding polio, including everything from its definition to the creation of vaccines and the continuous fight to eradicate disease.

What is Polio?

Polio, also know as poliomyelitis, it is a highly contagious viral infection caused by the poliovirus. It primarily affects children under the age of 5 but can strike individuals of any age. The virus targets the nervous system, leading to paralysis in severe cases.

Types of Polio

There are three types of poliovirus:

  1. Wild Poliovirus: This is the naturally occurring strain of the virus found in the environment.
  2. Vaccine-derived Poliovirus (VDPV): These are rare types of the poliovirus that have mutated from the oral polio vaccine (OPV) and can cause outbreaks in under-immunized populations.
  3. Sabin Poliovirus: This is the weakened form of the virus used in the oral polio vaccine.


Polio symptoms can vary from mild to severe and may include:

  • Fever
  • Sore throat
  • Headache
  • Fatigue
  • Stiffness in the neck
  • Muscle weakness or paralysis

Polio Vaccine

The development of vaccines against polio has been a significant milestone in public health. The two main types of polio vaccines are the oral polio vaccine (OPV) and the inactivated polio vaccine (IPV).

Vaccine Names

Commonly used polio virus vaccine schedule include:

  • Oral polio vaccine (OPV): Also known as the Sabin vaccine.
  • Inactivated polio vaccine (IPV): Also known as the Salk vaccine.

Polio Virus Vaccine Schedule

The polio virus vaccine schedule typically consists of multiple doses administered at specific ages:

IPV Schedule: The IPV is usually administered in four doses at 2 months, 4 months, 6-18 months, and 4-6 years of age.

OPV Schedule: The OPV is typically given in four doses at 2 months, 4 months, 6-18 months, and 4-6 years of age. However, in some countries, an additional dose may be recommended.

Polio Medical Term

The medical term for polio is poliomyelitis, derived from the Greek words “polio” meaning gray, and “myelon” meaning spinal cord. It refers to the inflammation of the spinal cord caused by poliovirus.

Polio Disease

Polio disease can lead to various complications, including paralysis, muscle atrophy, and respiratory problems. In severe cases, it can be fatal.

Polio Paul

“Polio Paul” refers to Paul Alexander, who was diagnosed with polio at the age of six. His story became a symbol of hope and resilience in the fight against polio.

Polio Virus

The poliovirus belongs to the family Picornaviridae and the genus Enterovirus. It has three serotypes: P1, P2, and P3.

Polio Vaccine History

The history of the polio virus vaccine is a testament to human ingenuity and perseverance. The first successful polio vaccine was developed by Dr. Jonas Salk in 1955, followed by the oral polio virus vaccine schedule developed by Dr. Albert Sabin in 1961.

Polio Iron Lung

The iron lung, also known as the “negative pressure ventilator,” was a life-saving device used to assist polio patients with respiratory paralysis. It played a crucial role in the treatment of polio before the development of effective vaccines.

Polio Scar

The oral polio vaccine (OPV) can sometimes leave a small scar at the site of administration. This scar is a sign that the vaccine has successfully stimulated the immune system to produce antibodies against the poliovirus.

Polio Eradication

The global effort to eradicate polio has made significant strides in recent decades. Through mass vaccination campaigns and surveillance efforts, the number of polio cases worldwide has been drastically reduced.

How is Polio Transmitted?

Polio is primarily transmitted through the fecal-oral route, meaning it spreads through contact with infected feces. It can also be spread through respiratory droplets from coughing or sneezing.

The polio virus vaccine schedule is a critical tool in the fight against polio, a disease that has plagued humanity for centuries. By staying informed about the virus, getting vaccinated according to the recommended schedule, and supporting global eradication efforts, we can work together to consign polio to the annals of history. Let us continue to strive for a world where no child has to suffer from the devastating effects of this preventable disease.

Causes Table

The common causes of polio is following:

Causes of Polio
Poliovirus transmission through contaminated water or food
Direct contact with an infected person’s feces or oral/nasal secretions
Inhalation of airborne droplets from coughs or sneezes of an infected person
Polio Virus Vaccine Schedule


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