Opportunistic free: Living amoeba now becoming a usual pathogen?

Area of Science:

• Neuroparasitology
• Infectious Diseases
• Pediatric Neurology

Background:

• Acanthamoeba species are protozoan pathogens known to cause granulomatous Acanthamoeba encephalitis (GAE).
• GAE predominantly affects immunocompromised individuals, presenting a significant diagnostic and therapeutic challenge.
• Understanding the spectrum of Acanthamoeba infections is crucial for timely diagnosis and management.

Observation:

• A 2-year-old immunocompetent child presented with acute purulent meningoencephalitis.
• The clinical presentation included a focal neurological deficit, prompting extensive diagnostic workup.
• Cerebrospinal fluid analysis and imaging were essential in identifying the causative agent.

Findings:

• The case confirmed Acanthamoeba species as the etiological agent of meningoencephalitis.
• This diagnosis was established despite the patient's immunocompetent status, highlighting atypical presentations.
• The focal neurological deficit indicated localized brain inflammation and damage.

Implications:

• This case expands the known clinical spectrum of Acanthamoeba infections to include immunocompetent children.
• It underscores the importance of considering Acanthamoeba in the differential diagnosis of pediatric meningoencephalitis, regardless of immune status.
• Further research into the pathogenesis and host-pathogen interactions in Acanthamoeba infections is warranted.