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Related Concept Videos

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 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...
Principles of Disease Surveillance01:26

Principles of Disease Surveillance

Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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 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...
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,...

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Related Experiment Video

Updated: Jun 4, 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

Global surveillance for meningococcal disease.

N E Rosenstein1

  • 1Division of Bacterial and Mycotic Diseases, Meningitis and Special Pathogens Branch, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA.

Methods in Molecular Medicine
|February 22, 2011
PubMed
Summary

Public health surveillance involves ongoing data collection and analysis for informed decision-making. This crucial tool identifies disease trends, outbreaks, and emerging health threats for effective public health programs.

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Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease

Background:

  • Historically, surveillance focused on direct contact tracing for infectious diseases.
  • Current public health surveillance emphasizes systematic data accumulation for decision-making.
  • A comprehensive surveillance system integrates data collection, analysis, and dissemination.

Purpose of the Study:

  • To define the evolving role and components of public health surveillance.
  • To highlight the utility of surveillance in managing infectious diseases.
  • To underscore surveillance as a critical tool for public health.

Main Methods:

  • Systematic review of the definition and application of surveillance.
  • Analysis of data collection, analysis, and dissemination processes.
  • Evaluation of surveillance's role in identifying disease trends and outbreaks.

Main Results:

  • Surveillance has evolved from contact supervision to broad data management.
  • Key functions include trend evaluation, outbreak identification, hypothesis testing, and program assessment.
  • Surveillance is vital for managing emerging, significant, or declining infectious diseases.

Conclusions:

  • Public health surveillance is indispensable for monitoring and responding to health threats.
  • Effective surveillance systems are foundational for evidence-based public health interventions.
  • The continuous adaptation and application of surveillance are essential for safeguarding population health.