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Related Concept Videos

Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Arboviral Encephalitis01:25

Arboviral Encephalitis

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...
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...
Poliomyelitis01:17

Poliomyelitis

Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...

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Updated: Jun 19, 2026

In Vivo Imaging Systems (IVIS) Detection of a Neuro-Invasive Encephalitic Virus
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VIRUS III ENCEPHALITIS.

T M Rivers1, F W Stewart

  • 1Hospital and Laboratories of The Rockefeller Institute for Medical Research.

The Journal of Experimental Medicine
|October 30, 2009
PubMed
Summary
This summary is machine-generated.

Rabbit Virus III causes encephalitis and lesions, similar to herpetic virus but is not immunologically related. This active, filterable agent affects the cornea, skin, and testicles.

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Area of Science:

  • Virology
  • Neuroscience
  • Ophthalmology

Background:

  • Virus III is an active, filterable agent found in rabbits.
  • This virus can cause lesions in the cornea, skin, and testicles.
  • It can also induce encephalitis, a condition affecting the brain.

Purpose of the Study:

  • To investigate the effects of Virus III in rabbits.
  • To compare the encephalitis induced by Virus III with that of herpetic virus.
  • To determine the immunological relationship between Virus III and herpetic virus.

Main Methods:

  • Experimental infection of rabbits with Virus III.
  • Observation and documentation of induced lesions (cornea, skin, testicles).
  • Assessment of neurological symptoms, specifically encephalitis.

Main Results:

  • Virus III produced lesions in the cornea, skin, and testicles.
  • Encephalitis was observed in rabbits infected with Virus III.
  • The encephalitis induced by Virus III showed similarities to herpetic virus-induced encephalitis.
  • Virus III and herpetic virus were found to be immunologically unrelated.

Conclusions:

  • Virus III is an etiological agent capable of causing significant pathology in rabbits, including encephalitis.
  • Despite clinical similarities in encephalitis, Virus III is distinct from herpetic virus.
  • The lack of immunological relationship highlights Virus III as a separate viral entity.