PetriKey

Virus

Lymphocytic choriomeningitis virus

Arenavirus, house mouse, aseptic meningitis

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arenaviruszoonosisrna-virusrodent-associatedcongenitalambisense

High-yield clue

House-mouse (Mus musculus) arenavirus classically linked to aseptic meningitis and congenital infection.

Overview

The prototype arenavirus (genus Mammarenavirus), an enveloped ambisense segmented RNA virus carried by the common house mouse and studied as a cause of aseptic meningitis and congenital infection.

Classification

  • Arenaviridae
  • Genus Mammarenavirus
  • Ambisense ssRNA
  • Two segments (bisegmented)
  • Enveloped

Lab & identification clues

  • CSF lymphocytic pleocytosis vocabulary
  • Segmented ambisense arenavirus genome framing
  • Congenital infection study association

Associations

  • Common house mouse (Mus musculus) reservoir
  • Exposure to rodent excreta transmission
  • Aseptic meningitis presentation vocabulary
  • Congenital hydrocephalus/chorioretinitis association

Commonly confused with

  • Lassa virus
  • Toxoplasma gondii (congenital)

Your notes

Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.

OpenStax: Microbiology 2e organism classification foundationssourceNCBI Bookshelf: Medical Microbiology organism chapterssourceCDC: CDC disease and public-health topic pagessource