Neisseria meningitidis

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by owl101
Last updated 6 years ago

Health & Fitness

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Neisseria meningitidis

Neisseria meningitidis is a aerobic parasitic like all the members of the Neisseriaceae family. It is a coccal bacterium that is responsible for causing meningitis, inflammation of the meninges layer covering the brain. It is Gram-negative and is non endospore forming. It's colonies apper smooth moist and glistening. It is primarily found in humans on the surface of mucosal membranes such as those found in the respiratory tract.

weapons and treatments

This can be treated with antibiotices even though the disease can be dangerous. Fast medical attention should be tthe first thougth when syntoms for meningitidis is suspected.

Victims and dangers

The disease can affect anyone of any age, but mainly affects babies, pre-school children, young people with weak immune sytems. Meningococcal meningitis and septicaemia are life-threatening diseases, but most people affected do recover. "For the purposes of the calculations in this report, the committee estimated that there are 1,200 new cases of Neisseria meningitidis B (NMB) infection each year in the United States. Approximately half of these occur in children and infants under 5 years of age. Overall mortality rate was estimated at 0.05 per 100,000, or just under 150 deaths per year in the United States." The National Academies Press


Bactiria responsible: Diplococcal bactiriumPathogen: Neisseria meningitidisDisease caused by this pathogen: Menigococcal


Maria Carrillo7th period Pre-AP Biology

There are 3 primary charateristics of the 13 serogroups, type A, B, C, Y, and W135 produce an antiphagocytic capsular polysaccharide, a coat that contains highly variable surface proteins thus contributing to its evasiveness. In addition, as mentioned earlier, the pilus coding genes are also highly variable contributing to its pathogenicity. Lastly, N. meningitidis produces large amounts of the endotoxin lipopolysaccharide (LPS) especially during the exponential growth phase which is excreted after blebbing.

Spread and attacks

This disease spreads from person to person in aerosol form as from a sneeze. As it start to attack, it gradually infects deeper into the tissue until it gains access to the bloodstream where it then travels to infect the meninges of the brain.

Characteristics:Stiff neck, fever and in sever cases coma and or death. Also red spots show on the infected presons skin

Wanted:Neisseria meningitidis


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