Acute childhood bacterial meningitis in Luanda, Angola

Tuula Pelkonen1, Irmeli Roine, Lurdes Monteiro

  • 1Hospital Pediatrico David Bernardino, Luanda, Angola. tuula.pelkonen@hotmail.com

Insights

Bacterial meningitis is a severe threat in developing nations. Early awareness and interventions like blood transfusions can significantly improve outcomes for children suffering from this serious infection.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Public Health

Background:

  • Bacterial meningitis poses a higher burden in developing countries compared to industrialized nations.
  • Limited data exists on the specific epidemiology and management of pediatric meningitis in regions like Angola.

Purpose of the Study:

  • To retrospectively analyze the incidence, causative agents, clinical presentation, and outcomes of bacterial meningitis in children treated at a pediatric hospital in Luanda, Angola.
  • To identify factors influencing prognosis and suggest strategies for improving outcomes.

Main Methods:

  • Retrospective review of 555 children diagnosed with meningitis at the Pediatric Hospital of Luanda in 2004.
  • Analysis of demographic data, clinical features, causative pathogens, treatment interventions (including blood transfusion), and patient outcomes (mortality and sequelae).

Main Results:

  • The primary bacterial agents were Haemophilus influenzae type b (Hib), pneumococcus, and meningococcus.
  • High rates of convulsions (65%) and altered consciousness (61%) were observed.
  • Case fatality was 35%, with 24% of survivors experiencing severe neurological sequelae. Blood transfusion was associated with reduced mortality (23% vs. 39%, p=0.003).

Conclusions:

  • Bacterial meningitis in Luanda has a high case fatality rate and leads to significant neurological sequelae.
  • Improving awareness to reduce diagnostic delays, optimizing fluid management, and utilizing blood transfusions are crucial for better prognosis while awaiting widespread vaccination.

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...
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...
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...
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...
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,...
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,...