Table of Contents
What is the most common pattern of infection for polio?
Poliovirus is spread by the fecal-oral and respiratory routes. Infection is more common in infants and young children. Polio occurs at an earlier age among children living in poor hygienic conditions. In temperate climates, poliovirus infections are most common during summer and autumn.
What are the three types of poliomyelitis?
There are three wild types of poliovirus (WPV) – type 1, type 2, and type 3.
What causes poliomyelitis?
Polio is caused by 1 of 3 types of the poliovirus. It often spreads due to contact with infected feces. This often happens from poor handwashing. It can also happen from eating or drinking contaminated food or water.
What is the pathophysiology of polio?
Pathophysiology of Poliomyelitis A primary (minor) viremia follows with spread of virus to the reticuloendothelial system. Infection may be contained at this point, or the virus may further multiply and cause several days of secondary viremia, culminating in the development of symptoms and antibodies.
What type of virus is the poliovirus?
Poliovirus, a nonenveloped, positive-sense, single-stranded RNA virus, is a member of the Enterovirus genus within the family Picornaviridae.
Is poliomyelitis a virus or bacteria?
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).
What is the difference between polio and poliomyelitis?
Note that “poliomyelitis” (or “polio” for short) is defined as the paralytic disease. So only people with the paralytic infection are considered to have the disease. Polio has been around since ancient times.
How is poliovirus transmitted?
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).