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. 2021 Jan 23;22(3-4):315–330. doi: 10.1186/BF03548657

Visna Virus Meningoencephalomyelitis in Goats

Meningoencephalomyelit hos getter förorsakad av visnavirus

Bo Sundquist 1,✉, Lennart Jönsson 1, Sten-Olof Jacobsson 1, Karl-Erik Hammarberg 1
PMCID: PMC8300523  PMID: 6283852

Abstract

A progressive paresis was encountered in herds of Swedish goats. The symptoms developed during a period of weeks or months, and were initially often seen as a weakness of the hind limbs before the animals became paralytic. The development and the histopathological lesions of the disease in the GNS and the lungs were similar to those of visna in sheep. In vitro grown choroid plexus cells, prepared from affected goats, showed foci of polykaryocytes. Electron microscopy revealed the presence of particles morphologically similar to those of sheep visna virus (SVV). Goats experimentally infected with the goat visna virus (GVV) developed GNS lesions similar to those of visna in sheep and became seropositive to SVV. The results of complement fixation tests, carried out on sera from 11 goat herds, showed a coincidence between seropositiveness and the occurrence of disease in one and the same herd. Using the ELISA method, an average of 80 % of the goats in 5 herds were found to be seropositive to GVV.

Keywords: visna virus, meningoencephalomyelitis, goat

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