meningococcus


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Related to meningococcus: pneumococcus, gonococcus, meningococcal vaccine, Neisseria meningitidis

Meningococcus

A major human pathogen belonging to the bacterial genus Neisseria, and the cause of meningococcal meningitis and meningococcemia. The official designation is N. meningitidis. The meningococcus is a gram-negative, aerobic, nonmotile diplococcus. It is fastidious in its growth requirements and is very susceptible to adverse physical and chemical conditions.

Humans are the only known natural host of the meningococcus. Transmission occurs by droplets directly from person to person. Fomites and aerosols are probably unimportant in the spread of the organism. The most frequent form of host-parasite relationship is asymptomatic carriage in the nasopharynx.

The most common clinical syndrome caused by the meningococcus is meningitis, which is characterized by fever, headache, nausea, vomiting, and neck stiffness and has a fatality rate of 15% (higher in infants and adults over 60). Disturbance of the state of consciousness quickly occurs, leading to stupor and coma. Many cases also have a typical skin rash consisting of petechiae or purpura. See Meningitis

meningococcus

[mə¦niŋ·gə¦käk·əs]
(microbiology)
Common name for Neisseria meningitidis.
References in periodicals archive ?
Explain that the vaccines have been introduced in light of the increasing prevalence and associated morbidity and mortality from other strains of Meningococcus such as MenB, MenW.
Meningococcal: VA-MENGOC-BC targeting Groups B & C Meningococcus
During the study 119 pupils aged 11 to 18 were asked to fill in lifestyle questionnaires and throat swabs were taken - 15% carried the meningococcus bug.
The higher percentage of vaccine coverage resulted in making the Sultanate free from several serious childhood diseases for a number of consecutive years, such as, polio, neonatal tetanus, meningococcus infection while the number of cases in other diseases fell to lower levels indicating that the Sultanate can eradicate diseases like measles as only three cases were reported and other three cases for German measles (rubella) while 38 cases were reported for whooping cough for 2009.
According to Professor Robert Booy, smokers are prime candidates for carrying the potentially deadly meningococcus bacteria in the back of their throats.
4) Case fatality ratios were high for pneumococcal meningitis (28%, 44/156), while ratios were similar for meningococcus and H.
What Are Children Dying From: WHO REPORT 2004 Diphtheria YF, Diphteria, Polio, Hepatitis B 0% Tetanus 5% Pertussis 7% Measles 13% Hib 9% Rotavirus 10% Pneumococcus 17% Meningococcus A/C JE 1% TB 9% HIV 9% Malaria 28% (Source: World Health Report 2004) Note: Table made from pie chart.
OptiMal test for malaria was negative and CSF latex for meningococcus was negative.
Bacterial meningitis is caused by bacteria such as meningococcus.
Personal protection is a must; use both barrier protection (PPE and biosafety cabinets) and vaccination against potential pathogens (HBV, Meningococcus, and others).
If the meningococcus invades the body, it enters from the throat into the bloodstream and travels to the meninges, the lining of the brain.
1995 Meningococcal Disease, scientists from Europe and the US summarize current information about the epidemiology of the worldwide disease, its population biology, options to combat it by vaccination, the basic biology of the meningococcus as revealed by genomic sequence data, cell biology, and clinical and public health management.