Porcine teschovirus 1 PTV1 An un

assigned species in the family Picornaviridae. Originally called porcine enterovirus serotype 1, the only serotype to cause serious disease. First recognized in 1930 in Teschen, in the Czech republic, and described as a virulent, highly fatal non-suppurative encephalomyelitis in which lesions were present throughout the central nervous system. Later, a less severe form of the disease was recognized in the UK and called Talfan disease. The disease causes fever, convulsions and paralysis which may be permanent in survivors. There is a diffuse encephalo-myelitis. Disease is produced in no other species. Strains causing significant disease are all in one serological group which can be divided into three subgroups: (1) includes Teschen (Konratice) and Bozen strains; (2) includes Talfan and Tyrol strains; and (3) includes Reporyje strain. The serological subgroups are not correlated with virulence. Virus replicates with CPE in pig kidney cell culture and strains can be types T or V according to the type of CPE. In general, does not replicate in cells from other species. Does not hemagglutinate. A vaccine has been used successfully.

Synonym: infectious porcine encephalo-myelitis virus; infectious porcine poliomyelitis virus; Talfan disease virus; Teschen disease virus.

Porcine torovirus (PoTV) A species in the genus Torovirus. Immunoelectron microscopy of piglet feces revealed elongated particles 120 x 55 nm. The genome RNA was amplified and sequences related to those of bovine and equine toroviruses were detected. Pigs also had serum neutralizing antibodies to Equine torovirus.

Kroneman A et al (1998) J Virol 72, 3507

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