Related Experiment Video
Updated: Jul 14, 2026

04:43
COVID-19 Seroprevalence Test for IgG Antibody Levels Among Healthy Donors Across Different Pandemic Phases in Jeddah
Published on: June 24, 2025
Childhood bacterial meningitis in Riyadh.
Annals of Saudi Medicine
|November 1, 1991
Summary
This study on bacterial meningitis in children found Hemophilus influenzae type b as the leading cause. A low mortality rate of 2.8% was observed, with some antibiotic resistance noted.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Bacterial meningitis remains a significant cause of childhood morbidity and mortality globally.
- Understanding the etiological agents and their antimicrobial susceptibility patterns is crucial for effective treatment and prevention strategies.
Purpose of the Study:
- To identify the common bacterial pathogens causing meningitis in children admitted to Sulemania Children's Hospital, Riyadh.
- To determine the antimicrobial resistance patterns of these pathogens.
- To analyze the clinical presentation, treatment, and outcomes of childhood bacterial meningitis.
Main Methods:
- A retrospective review of 106 patients with culture-positive bacterial meningitis admitted between February 1985 and July 1990.
- Identification of causative organisms through laboratory culture and sensitivity testing.
- Analysis of patient demographics, clinical findings, antibiotic pretreatment, and mortality rates.
Main Results:
- The most common pathogens in children older than 1 month were Hemophilus influenzae type b (61 cases), Streptococcus pneumoniae (19 cases), and Neisseria meningitidis (14 cases).
- In neonates, Group B beta-hemolytic Streptococcus (4 cases) was the most frequent cause.
- A 4.9% resistance rate to both ampicillin and chloramphenicol was observed in Hemophilus influenzae isolates.
- The overall mortality rate was 2.8%.
Conclusions:
- Hemophilus influenzae type b is the predominant cause of bacterial meningitis in children over one month in this region.
- The emergence of antibiotic resistance, particularly in Hemophilus influenzae, necessitates careful antibiotic selection.
- The low mortality rate suggests effective management, but ongoing surveillance of pathogens and resistance is vital.
Related Concept Videos
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
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...
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 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...
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Respiratory Syncytial Virus Disease
Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...
