Poliovirus enters the body through the mouth, infecting the first cells with which it comes in contact-the pharynx and intestinal mucosa. It gains entry by binding to an immunoglobulin-like receptor, known as the poliovirus receptor or CD155, on the cell membrane.[28] The virus then hijacks the host cell's own machinery, and begins to replicate. Poliovirus divides within gastrointestinal cells for about a week, from where it spreads to the tonsils (specifically the follicular dendritic cells residing within the tonsilar germinal centers), the intestinal lymphoid tissue including the M cells of Peyer's patches, and the deep cervical and mesenteric lymph nodes, where it multiplies abundantly. The virus is subsequently absorbed into the bloodstream.[29]
Known as viremia, the presence of virus in the bloodstream enables it to be widely distributed throughout the body. Poliovirus can survive and multiply within the blood and lymphatics for long periods of time, sometimes as long as 17 weeks.[30] In a small percentage of cases, it can spread and replicate in other sites, such as brown fat, the reticuloendothelial tissues, and muscle.[31] This sustained replication causes a major viremia, and leads to the development of minor influenza-like symptoms. Rarely, this may progress and the virus may invade the central nervous system, provoking a local inflammatory response. In most cases, this causes a self-limiting inflammation of the meninges, the layers of tissue surrounding the brain, which is known as nonparalytic aseptic meningitis.[2] Penetration of the CNS provides no known benefit to the virus, and is quite possibly an incidental deviation of a normal gastrointestinal infection.[32] The mechanisms by which poliovirus spreads to the CNS are poorly understood, but it appears to be primarily a chance event-largely independent of the age, gender, or socioeconomic position of the individual.[32]
Polio affects the nervous system.
Neither. Polio is a virus and is not affected by gram staining.
Albert Sabin founded the oral polio vaccine and the vaccine was licensed in 1962.
the polio virus...the virus is an enterovirus...there are 3 types....1,2,3 the polio virus...the virus is an enterovirus...there are 3 types....1,2,3
No, a virus causes it.
There are several- one of them is polio.
You would not want our children to be paralyzed by polio.
the polio is a disease that may affect our nervous system.We need to exercise or move the affected part of polio to strengh or muscles and to our nerves so that our blood can move for the right place of it that when they go and so that it doesn't paralyze.... thank you... by: Patricia Anne (Patty) Romulo galing mo patty
How does a person's body fight off polio
Polio short for Poliomyelitis. The cause for Polio is by infection with a member of the genus Enterovirus known as Poliovirus. There are vaccines to help prevent this virus. you also can be born with this disease.
Polio is transmitted, most commonly, through fecal matter and saliva.
Polio is transferred from what human to another by fecal-oral ingestion.
Franklin Roosevelt the US president had polio.
Jonas Salk
Polio is caused by an infection from the poliovirus. When a person is affected with it the virus resides in the intestinal tract and in the mucus in your nose and throat. It is usually spread through contact with the waste of an infected person. It is less frequently spread through contact with infected respiratory secretions - saliva.
The polio virus is often transmitted via fecal matter. It can also be transmitted through food or water or an infected person.
The name of man who invented the polio vaccine is Jonas Salk.