Invasive meningococcal disease in the 21st century—an update for the clinician

Area of Science:

• Microbiology
• Infectious Diseases
• Immunology

Background:

• Neisseria meningitidis, a gram-negative diplococcus, is a common colonizer but can cause severe, fatal invasive diseases such as meningitis and bacteremia.
• Specific populations, including infants, adolescents, asplenic individuals, and those with complement deficiencies or HIV, face increased risk.
• The epidemiology of meningococcal disease has been significantly influenced by conjugate meningococcal vaccines.

Purpose of the Study:

• To review the pathogenesis and management of meningococcal disease.
• To highlight recent advancements in disease epidemiology and outbreak patterns.
• To discuss the evolution and impact of meningococcal immunizations, including novel vaccines.

Main Methods:

• Literature review of pathogenesis, clinical management, and epidemiology.
• Analysis of vaccine impact on disease trends.
• Discussion of recent outbreaks and novel vaccine developments.

Main Results:

• Conjugate meningococcal vaccines have altered disease epidemiology globally.
• Serogroup B meningococcal disease outbreaks, particularly in university settings, have spurred vaccine development.
• A novel serogroup B vaccine is now approved in many countries.

Conclusions:

• Understanding Neisseria meningitidis pathogenesis and risk factors is crucial for disease prevention.
• Vaccination remains a cornerstone in controlling meningococcal disease, with new vaccines addressing previously unmet needs.
• Ongoing surveillance and vaccine evolution are essential to combat evolving disease epidemiology and outbreaks.