- Prodromal Stage or Pre-Paralytic Stage- few hours to a few days and 1 to 3 days is the usual duration.
- Acute Stage-3 to 6 weeks from the onset of Poliomyelitis.
- Convalescent Stage- Duration 3 months.
- Stage of Recovery-This stage extends for almost 2 years.
What are the four stages of poliomyelitis?
We describe the process of eradication in four historical stages: (1) The advent of the inactivated and oral polio vaccines launched the age of poliomyelitis control; (2) The massive and simultaneous use of OPV had a significant impact on WPV transmission in the late 1970s in Brazil;
(3) Domestic and international
…
Are there polio stages?
Two phases
of acute poliomyelitis can be distinguished: a nonspecific febrile illness (minor illness) followed, in a small proportion of patients, by aseptic meningitis and/or paralytic disease (major illness).
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.
How long does it take to recover from polio?
How Long Does Polio Last? People who have milder polio symptoms usually make a full recovery
within 1–2 weeks
. People whose symptoms are more severe can be weak or paralyzed for life, and some may die. After recovery, a few people might develop “post-polio syndrome” as long as 30–40 years after their initial illness.
What is the key symptom of polio?
Paralysis
is the most severe symptom associated with polio, because it can lead to permanent disability and death. Between 2 and 10 out of 100 people who have paralysis from poliovirus infection die, because the virus affects the muscles that help them breathe.
Where did polio originally 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.
Does polio affect both 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.
What does polio virus look like?
Poliovirus is a nonenveloped virus having
the shape of an icosahedral capsid (spherical)
, belonging to the Picornaviridae family. It may cause poliomyelitis (infantile paralysis). The main transmission path is direct or indirect contact with contaminated persons or objects.
What are the complications of poliomyelitis?
What are possible complications of polio? The most severe complication of polio is paralysis. This can lead to problems with
breathing, swallowing, and bowel and bladder function
. Post-polio syndrome can happen many years after the initial infection.
How did polio spread from person to person?
Polio is spread when
the stool of an infected person is introduced into the mouth of another person through contaminated water or food
(fecal-oral transmission). Oral-oral transmission by way of an infected person’s saliva may account for some cases.
Who is most at risk for polio?
Risk factors
Polio mainly affects
children younger than 5
. However, anyone who hasn’t been vaccinated is at risk of developing the disease.
Can you get polio after being vaccinated?
Do people still get polio in the United States?
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.
How is polio treated today?
Treatment and prevention
There is no cure for polio
, only treatment to alleviate the symptoms. Heat and physical therapy is used to stimulate the muscles and antispasmodic drugs are given to relax the muscles. While this can improve mobility, it cannot reverse permanent polio paralysis.
How many polio survivors are still alive?
The World Health Organization estimates that
10 to 20 million polio survivors
are alive worldwide, and some estimates suggest that 4 to 8 million of them may get PPS.
Can polio affect offspring?
When women had poliomyelitis during a pregnancy, more miscarriages and stillbirths were observed, as was paralysis of the newborn ( congenital polio). The vaccines for polio are made up of inactivated viruses and,
if given in pregnancy, do not seem to cause any harm to the developing embryo or fetus
.
