Is Polio A DNA Virus?

How long is the polio vaccine good for?

The minimum interval between the next-to-last and last doses in the polio vaccination series is 6 months and the last dose should be at age 4 years or older..

Does polio only affect the legs?

The virus may affect muscles on both sides of the body, but more often the paralysis is asymmetrical. Any limb or combination of limbs may be affected – one leg, one arm, or both legs and both arms.

How does polio kill?

Polio can result in permanent disability. Polio can also cause death, usually by paralyzing the muscles used for breathing. Polio used to be very common in the United States. It paralyzed and killed thousands of people every year before polio vaccine was introduced in 1955.

Does polio vaccine last for life?

It is not known how long people who received IPV will be immune to poliovirus, but they are most likely protected for many years after a complete series of IPV.

What are the 3 types of polio virus?

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.

Do adults need a polio booster?

Routine poliovirus vaccination of U.S. adults (i.e., persons aged >18 years) is not necessary. Most adults do not need polio vaccine because they were already vaccinated as children and their risk of exposure to polioviruses in the United States is minimal.

What type of virus is polio?

Polio is caused by a human enterovirus called the poliovirus. Polio can interact in its host in two ways: Infection not including the central nervous system, which causes a minor illness with mild symptoms. Infection including the central nervous system, which may cause paralysis.

What is polio now called?

The condition looked remarkably like polio—the viral disease that is on the verge of being eradicated worldwide. But none of the kids tested positive for poliovirus. Instead, their condition was given a new name: acute flaccid myelitis, or AFM.

Do we still get polio vaccine?

The inactivated polio vaccine (or IPV) is now the only vaccine given in the United States to prevent polio. IPV is given as a series of four shots at 2 months, 4 months, 6 to 18 months, and again at 4 to 6 years of age.

Why does polio affect the legs?

These nerve cells cannot regenerate, and the affected muscles lose their function due to a lack of nervous enervation – a condition known as acute flaccid paralysis (AFP). Typically, in patients with poliomyelitis muscles of the legs are affected more often than the arm muscles.

Does polio have DNA?

Poliovirus, the causative agent of polio (also known as poliomyelitis), is a serotype of the species Enterovirus C, in the family of Picornaviridae. Poliovirus is composed of an RNA genome and a protein capsid. The genome is a single-stranded positive-sense RNA genome that is about 7500 nucleotides long.

Where does the polio virus come from?

Causes. Share on Pinterest Polio is caused by the poliovirus. 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.

What is Type 3 polio?

Wild poliovirus type 3 (WPV3) has been eradicated worldwide, according to an independent commission of experts. The news comes today—World Polio Day—and means two of the three wild poliovirus strains are now eradicated. The last case of WPV3 was detected in northern Nigeria in 2012.

What is the symptoms of polio?

Signs and symptoms, which can last up to 10 days, include:Fever.Sore throat.Headache.Vomiting.Fatigue.Back pain or stiffness.Neck pain or stiffness.Pain or stiffness in the arms or legs.More items…•

What does Polio do to legs?

Symptoms vary from mild, flu-like symptoms to life-threatening paralysis. In less than 1% of cases, polio causes permanent paralysis of the arms, legs or breathing muscles. Between 5 and 10% of people who develop paralytic polio will die. Physical symptoms may return 15 years or more after the first polio infection.

Which body part is affected by polio?

Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus. The virus spreads from person to person and can infect a person’s spinal cord, causing paralysis (can’t move parts of the body).

Who should not get the polio vaccine?

Anyone with a life-threatening allergy to any component of IPV, including the antibiotics neomycin, streptomycin or polymyxin B, should not get polio vaccine. Tell your doctor if you have any severe allergies. Anyone who had a severe allergic reaction to a previous polio shot should not get another one.