Related Experiment Video
Updated: Sep 25, 2026

Adjuvant Activity of Mycobacterium paratuberculosis in Enhancing the Immunogenicity of Autoantigens During Experimental Autoimmune Encephalomyelitis
Published on: May 12, 2023
Acute disseminated encephalomyelitis associated with Pasteurella multocida meningitis
Normand L Proulx1, Mark S Freedman, James W Chan
1Department of Medicine, Division of Internal Medicine, The Ottawa Hospital-General Campus, Ottawa, Ontario, Canada.
Objective:
To describe a case of Pasteurella multocida meningitis associated with acute disseminated encephalomyelitis (ADEM).
Case Report:
A 33-year-old woman employed in a dog pound presented herself to hospital with fever and meningismus and was found to have culture positive Pasteurella multocida meningitis. Despite appropriate antibiotic treatment her clinical course was characterized by a persistent fever and worsening encephalopathy, which prompted further neurological investigation. Spinal fluid exam and serial MRI scans as well as her one-year clinical course were found to be compatible with ADEM.
Conclusion:
Persistent fever and worsening encephalopathy in meningitis may indicate a para-infectious immune process such as ADEM, and may serve as indications for further neurological investigation.
Insights
A rare case of Pasteurella multocida meningitis complicated by acute disseminated encephalomyelitis (ADEM) was observed. Persistent fever and encephalopathy in meningitis warrant neurological investigation for potential immune processes like ADEM.
Area of Science:
- Neurology
- Infectious Diseases
Background:
- Meningitis, an inflammation of the membranes surrounding the brain and spinal cord, can have serious neurological complications.
- Pasteurella multocida is a bacterium that can cause infections, including meningitis, particularly in individuals with exposure to animals.
Observation:
- A 33-year-old woman with Pasteurella multocida meningitis presented with persistent fever and worsening encephalopathy despite antibiotic treatment.
- Neurological investigations, including MRI, revealed findings consistent with acute disseminated encephalomyelitis (ADEM).
Findings:
- The case highlights a potential association between Pasteurella multocida meningitis and the development of ADEM.
- ADEM, a rare immune-mediated neurological disorder, can occur as a post-infectious complication.
Implications:
- Persistent fever and encephalopathy in meningitis patients may signal a para-infectious immune response, such as ADEM.
- Early neurological investigation is crucial for diagnosing and managing such complex cases, potentially altering treatment strategies.
Related Concept Videos
Encephalitis l: Introduction
Bacterial Meningitis I: Introduction
Viral Meningitis
Rocky Mountain Spotted Fever
Arboviral Encephalitis
Bacterial Meningitis
