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Related Concept Videos

Viral Meningitis01:18

Viral Meningitis

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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...
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Arboviral Encephalitis01:25

Arboviral Encephalitis

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Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
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Acute Pharyngitis01:30

Acute Pharyngitis

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Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
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Transmission-based Precautions I: Contact, Enteric, and Droplets01:17

Transmission-based Precautions I: Contact, Enteric, and Droplets

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Transmission-based precautions are for patients known to be infected or suspected to be infected or colonized with organisms that pose a significant risk to others. Some transmission-based precautions include contact, enteric, and droplet.
Contact Precautions:
Contact precautions are the measures taken to prevent the transmission of infectious agents, especially epidemiologically important microorganisms such as MRSA or influenza, primarily transmitted through direct or indirect contact with an...
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Endocarditis I: Introduction01:25

Endocarditis I: Introduction

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Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
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Transmission-based Precautions II: Airborne and Protective Environment01:25

Transmission-based Precautions II: Airborne and Protective Environment

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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
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Related Experiment Video

Updated: Apr 10, 2026

Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
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Infectious meningitis and encephalitis: A primer for acute care practitioners.

Martin Beed1, Chit Wong1, Rob A Dineen1

  • 1Nottingham University Hospitals, UK.

Journal of the Intensive Care Society
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Summary

Meningitis and encephalitis are serious brain infections that are often misdiagnosed. Early recognition and prompt treatment are crucial for improving outcomes and reducing the high mortality and morbidity associated with these central nervous system infections.

Keywords:
encephalitisintensive caremeningitisneuro intensive careteamwork

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Critical Care Medicine

Background:

  • Meningitis and encephalitis are severe central nervous system (CNS) infections affecting all age groups.
  • These conditions are prone to misdiagnosis, leading to devastating outcomes, high morbidity, and mortality.
  • CNS infections represent a significant cause of admission to intensive care units (ICUs), with substantial associated healthcare costs and resource utilization.

Purpose of the Study:

  • To provide a foundational understanding of meningitis and encephalitis for healthcare professionals involved in sepsis care.
  • To highlight the diagnostic challenges, clinical presentations, and epidemiological impact of these CNS infections.
  • To emphasize the critical importance of early recognition and timely management in improving patient outcomes.

Main Methods:

  • Review of clinical presentation, diagnostic modalities, and treatment strategies for meningitis and encephalitis.
  • Discussion of epidemiological data, including incidence, mortality, and long-term disability rates.
  • Emphasis on the role of history, physical examination, lumbar puncture (LP), and neuroimaging (CT/MRI) in diagnosis.

Main Results:

  • Meningitis affects millions worldwide annually, with significant mortality and morbidity, including high rates of permanent disability.
  • Delayed diagnosis and treatment (over 4 hours) are associated with increased mortality and intracranial complications.
  • Early administration of appropriate antimicrobials (within 1 hour) and supportive care significantly improve patient outcomes.

Conclusions:

  • Meningitis and encephalitis are life-threatening infections requiring prompt diagnosis and management.
  • Adherence to established diagnostic and treatment protocols, including rapid antimicrobial administration, is essential.
  • Effective management hinges on the "chain-of-survival" principles, emphasizing early recognition and intervention to mitigate severe consequences.