Related Experiment Video

Updated: Jul 18, 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

[Bacterial meningiditis in adult patients in Central African hospitals]

P Mbelesso1, A Tatangba-Bakozo, V Fikouma

  • 1Service de neurologie, hôpital de l'Amitié, BP 3183, Bangui, République Centrafricaine. pascal.mbelesso@yahoo.fr

Bulletin De La Societe De Pathologie Exotique (1990)
|November 23, 2006
PubMed

Insights

Bacterial meningitis remains a significant threat, with pneumococcus and meningococcus as leading causes. HIV coinfection is highly prevalent, particularly in cases of Haemophilus influenzae and Salmonella meningitis, increasing mortality risks.

Area of Science:

  • Epidemiology of infectious diseases
  • Bacteriology
  • Public health

Context:

  • Adult bacterial meningitis presents ongoing clinical challenges despite advances in treatment.
  • A 5-year retrospective study analyzed 502 cases to understand prevalence, causative agents, and outcomes.
  • Infections show seasonal patterns, peaking between November and April, with a notable surge in March.

Purpose:

  • To investigate the epidemiological characteristics and etiological agents of bacterial meningitis in adults.
  • To assess the impact of Human Immunodeficiency Virus (HIV) coinfection on meningitis cases and outcomes.
  • To determine hospitalization duration and mortality rates associated with different bacterial meningitis pathogens.

Summary:

  • The study identified Streptococcus pneumoniae (45.2%) and Neisseria meningitidis (14.5%) as the most common bacterial pathogens.
  • Human Immunodeficiency Virus (HIV) seroprevalence was high at 55.1%, with significantly elevated rates in patients infected with Haemophilus influenzae (83%) and Salmonella (87.5%).
  • Mortality rates were substantial for pneumococcal (31.7%) and meningococcal (30.1%) meningitis, with an overall recovery rate of 53.4%.

Impact:

  • Findings highlight the critical need for targeted prevention and treatment strategies, especially in populations with high HIV prevalence.
  • The study underscores the severe prognosis of bacterial meningitis, particularly when coinfected with HIV.
  • Results provide valuable data for public health interventions and resource allocation in managing bacterial meningitis.

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 Meningitis01:24

Bacterial Meningitis

Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
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...
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...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...