Extensive myelitis after oral polio vaccination: MRI features

Area of Science:

• Neurology
• Pediatrics
• Infectious Diseases

Background:

• Oral polio vaccine (OPV) is crucial for polio eradication.
• Neurological complications following OPV are exceedingly rare.
• Understanding rare adverse events is vital for public health.

Observation:

• A 7-year-old boy developed fever and ataxia 20 days post-OPV.
• MRI revealed extensive myelitis affecting the gray matter's anterior and posterior horns.
• The patient experienced a complete recovery after treatment.

Findings:

• The case demonstrates postvaccinal myelitis, a rare complication of oral polio vaccination.
• Etiology could be infectious or immune-mediated.
• Extensive myelitis involving both anterior and posterior horns of the gray matter was observed.

Implications:

• Prompt diagnosis and treatment of postvaccinal myelitis are essential for favorable outcomes.
• This case underscores the need for vigilance regarding rare neurological adverse events post-OPV.
• Further research into the mechanisms of OPV-associated myelitis may be warranted.