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Related Concept Videos

Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...

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Related Experiment Video

Updated: May 22, 2026

Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
10:03

Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery

Published on: November 5, 2019

Can we, should we, eradicate the meningococcus?

Martin C J Maiden1, Matthias Frosch

  • 1Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, United Kingdom. martin.maiden@zoo.ox.ac.uk

Vaccine
|May 22, 2012
PubMed
Summary
This summary is machine-generated.

Eradicating Neisseria meningitidis is unlikely due to its commensal nature and diversity. Controlling specific disease-causing strains is a more feasible goal for public health.

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Last Updated: May 22, 2026

Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
10:03

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10:12

Neisseria meningitidis Infection of Induced Pluripotent Stem-Cell Derived Brain Endothelial Cells

Published on: July 14, 2020

Area of Science:

  • Microbiology
  • Immunology
  • Public Health

Background:

  • Infectious disease control often aims for pathogen eradication, a feat achieved only for smallpox virus in humans.
  • Neisseria meningitidis (meningococcus) is an obligate human bacterium causing significant disease, prompting consideration of its eradication.
  • Advances in conjugate vaccines offer potential for interrupting meningococcal transmission.

Purpose of the Study:

  • To evaluate the feasibility of controlling, eliminating, or eradicating Neisseria meningitidis.
  • To weigh the factors supporting and opposing eradication efforts.
  • To determine achievable public health goals for meningococcal disease.

Main Methods:

  • Literature review and analysis of Neisseria meningitidis characteristics.
  • Assessment of epidemiological factors relevant to eradication.
  • Consideration of vaccine efficacy and limitations.

Main Results:

  • Factors favoring eradication include limited serogroups, no animal reservoir, and disease burden.
  • Factors against eradication include commensalism, high population diversity, and lack of comprehensive vaccines.
  • Potential harm from microbiome perturbation is a concern.

Conclusions:

  • Eradication of Neisseria meningitidis is not currently feasible.
  • Control and elimination of disease caused by specific pathogenic meningococcal genotypes is a more realistic objective.
  • Focus should be on managing disease associated with particular strains rather than total eradication.