Related Experiment Video
Updated: Jun 16, 2026

Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
Published on: November 5, 2019
Epidemiological profile of meningococcal disease in the United States
1University of Pittsburgh Graduate School of Public Health and School of Medicine, Pennsylvania, USA. lharriso@edc.pitt.edu
Abstract:
Neisseria meningitidis is a leading cause of bacterial meningitis and other serious infections worldwide. The epidemiological profile of N. meningitidis is highly changeable, with great differences in disease incidence and serogroup distribution. Six serogroups (namely serogroups A, B, C, W-135, X, and Y) are responsible for most cases of meningococcal disease worldwide; the epidemiological profile of disease caused by each serogroup is unique. No vaccine is available for endemic disease caused by serogroup B strains. Two tetravalent (A/C/Y/W-135) meningococcal vaccines are licensed in the United States: a purified polysaccharide product and a polysaccharide-protein conjugate vaccine. The conjugate vaccine is recommended for all adolescents, although vaccine coverage remains low, and other groups at high risk of infection. A comprehensive program to prevent invasive meningococcal disease in the United States will require vaccination of infants; several conjugate vaccines for infants may become available in the near future. Broadly protective vaccines for endemic serogroup B disease are also needed.
Insights
Neisseria meningitidis causes bacterial meningitis globally. New vaccines are needed, especially for serogroup B strains, to improve prevention of meningococcal disease.
Area of Science:
- Microbiology
- Epidemiology
- Vaccinology
Background:
- Neisseria meningitidis is a primary cause of bacterial meningitis and severe infections worldwide.
- Meningococcal disease epidemiology varies significantly in incidence and serogroup distribution.
- Serogroups A, B, C, W-135, X, and Y are responsible for the majority of global cases, each with a distinct disease profile.
Purpose of the Study:
- To review the current landscape of meningococcal disease and available vaccines.
- To identify gaps in current vaccination strategies and highlight the need for new vaccine development.
Main Methods:
- Literature review of epidemiological data on Neisseria meningitidis.
- Analysis of existing meningococcal vaccine profiles and recommendations.
- Assessment of current challenges in meningococcal disease prevention.
Main Results:
- No vaccine is currently available for endemic serogroup B meningococcal disease.
- Licensed vaccines in the US include a tetravalent polysaccharide and a conjugate vaccine (A/C/Y/W-135).
- Current conjugate vaccine recommendations for adolescents have low coverage, necessitating broader strategies.
Conclusions:
- Infant vaccination is crucial for a comprehensive invasive meningococcal disease prevention program in the US.
- Development of broadly protective vaccines for endemic serogroup B disease is urgently required.
- Improved vaccine coverage and new vaccine formulations are essential to combat meningococcal disease globally.
Related Concept Videos
Bacterial Meningitis I: Introduction
Bacterial Meningitis
Bacterial Meningitis II: Pathophysiology
Viral Meningitis
Cryptococcal Meningitis
Investigation of Disease Outbreaks

