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Nevrologisk Virus Hos Hester
Nevrologisk Virus Hos Hester

Video: Nevrologisk Virus Hos Hester

Video: Nevrologisk Virus Hos Hester
Video: Virus-Cell Interactions Part 1: Productive vs. Non-Productive 2024, Desember
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Bornasykdom hos hester

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Borna er en virussykdom som forekommer hos hester (og andre varmblodige dyr). Først oppdaget hos hester i Tyskland, er det hovedsakelig en sykdom som finnes i europeiske og Midtøsten-land i dag. Det er ikke kjent for tiden å være i USA.

Borna sykdomsviruset (BDV) forårsaker nevrologiske problemer og er dødelig hos mange hester. Hester så vel som sauer og andre husdyr er naturlige verter for dette viruset, men andre dyr som gnagere kan påvirkes.

Symptomer og typer

De kliniske tegnene på Borna-virus ligner på andre encefalitiske sykdommer hos hester. Inkubasjonstiden er relativt lang og kan ta opptil seks måneder fra infeksjonstidspunktet til kliniske tegn dukker opp. Dette skyldes den langsomme bevegelsen av viruset langs nevroner.

  • Sløvhet
  • Dårlig koordinering
  • Blindhet
  • Svakhet
  • Lammelse
  • Kollapse
  • Merkelig oppførsel (for eksempel hodetrykk eller funnet i mørke hjørner)

Årsaker

Modus for viral overføring er fortsatt ukjent, men antas å være via innånding eller svelging. Det er også mistanke om flåttoverføring, og det er også spredningen av viruset via trekkfugler.

Diagnose

Definitiv diagnose av Borna-virusinfeksjon på en levende hest er vanskelig. Prøver av cerebral spinal fluid (CSF) viser bare resultater som er typiske for mange forskjellige smittsomme nevrologiske tilstander og kan ikke skille Borna-virus spesifikt. Etter døden kan prøver av sentralnervesystemet sendes til laboratorier for videre undersøkelse og identifisering av Borna-viruset som er laget på dette tidspunktet.

Behandling

Det er ingen spesifikk behandling for BDV på dette tidspunktet. Imidlertid er det utført studier for å isolere viruset, og det gjøres fremskritt mot bedre behandlingsalternativer. Hvis en hest i USA skulle få diagnosen denne sykdommen, bør myndighetsmyndigheter varsles.

Bo og ledelse

I de fleste tilfeller er BDV dødelig hos hester, men de som overlever har permanente bivirkninger av denne svekkende tilstanden, for eksempel redusert hjernefunksjon eller andre nevrologiske svekkelser som kan gjøre ambulering vanskelig. Avlivning blir ofte valgt.

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