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Neisseria meningitidis, often referred to as the meningococcus, is a Gram-negative bacterium that can cause meningitis and other forms of meningococcal disease such as meningococcemia, a life-threatening sepsis. The bacterium is referred to as a coccus because it is round, and more specifically a diplococcus because of its tendency to form ...
structure summary. Outer membrane adhesin OpcA protein family consists of several Neisseria species specific outer membrane proteins. Neisseria meningitidis causes meningococcal meningitis and sepsis. Opc (formerly called 5C) is one of the major outer membrane proteins and has been shown to play an important role in meningococcal adhesion and ...
Meningococcal vaccine refers to any vaccine used to prevent infection by Neisseria meningitidis. [9] Different versions are effective against some or all of the following types of meningococcus: A, B, C, W-135, and Y. [9][10] The vaccines are between 85 and 100% effective for at least two years. [9] They result in a decrease in meningitis and ...
Neisseria is a large genus of bacteria that colonize the mucosal surfaces of many animals. Of the 11 species that colonize humans, only two are pathogens, N. meningitidis and N. gonorrhoeae. Neisseria species are Gram-negative bacteria included among the Pseudomonadota, a large group of Gram-negative forms. Neisseria diplococci resemble coffee ...
Meningitis is acute or chronic inflammation of the protective membranes covering the brain and spinal cord, collectively called the meninges. [ 10 ] The most common symptoms are fever, intense headache, vomiting and neck stiffness and occasionally photophobia.
Multilocus sequence typing (MLST) is a technique in molecular biology for the typing of multiple loci, using DNA sequences of internal fragments of multiple housekeeping genes to characterize isolates of microbial species. The first MLST scheme to be developed was for Neisseria meningitidis, [1] the causative agent of meningococcal meningitis ...
NmVac4-A/C/Y/W-135 is the commercial name of the polysaccharide vaccine against the bacterium (specifically serogroups A, C, Y, and W-135) that causes meningococcal meningitis. The product, by JN-International Medical Corporation, is designed and formulated to be used in developing countries for protecting populations during meningitis disease ...
In the case of Neisseria meningitidis, the lipid A portion of the molecule has a symmetrical structure and the inner core is composed of 3-deoxy-D-manno-2-octulosonic acid (KDO) and heptose (Hep) moieties. The outer core oligosaccharide chain varies depending on the bacterial strain. [7] [22]