Porcine enteric calicivirus PECV An

unassigned virus in the family Caliciviridae, associated with diarrhea in young pigs, from which it was first isolated. Can be propagated in primary pig kidney cells or a pig cell line (LLC-PK-2 cells). The virus has one major structural protein, mol. wt. 58000, that does not cross-react with feline calicivirus proteins.

Parwani AV et al (1990) Arch Virol 112, 41

porcine enteroviruses Species in the genus Enterovirus, originally classified into 13 serotypes on the basis of cross-neutralization tests in cell culture. Serotype 1 has been renamed Porcine teschovirus 1. Usually harmless inhabitants of the intestinal tract of pigs. Do not replicate in cells from other species, and do not hemag-glutinate.

Synonyms: Ansteckende schweine-lahmung virus; enteric cytopathic porcine orphan virus (ecpovirus); enteric cytopathic swine orphan virus (ecso-virus).

Porcine enterovirus 2-7 (PEV-2 to -7)

Unassigned species in the family Picornaviridae.

porcine enterovirus 8 (PEV-8) A serotype of Porcine enterovirus A.

porcine enterovirus 9 (PEV-9) A serotype of Porcine enterovirus B.

porcine enterovirus 10 (PEV-10) A serotype of Porcine enterovirus B.

Porcine enterovirus 11-13 (PEV-11 to -13)

Unassigned species in the family Picornaviridae.

Porcine enteroviruses A and B (PEV-A and

B) Species in the genus Enterovirus. PEV-A is serotype 8 in the original classification of porcine enteroviruses. PEV-B is comprised of serotypes 9 and 10 in the original classification of porcine enteroviruses.

porcine enzootic pneumonia Not a virus disease. A disease of swine caused by Mycoplasma hyopneumoniae.

Porcine epidemic diarrhea virus (PEDV) A

species in the genus Coronavirus which infects swine worldwide including Europe, Australia and the USA, causing acute watery diarrhea. Symptoms are similar to those of Transmissible gastroenteritis virus (TGEV), but develop more slowly, with a longer incubation period, and lowered mortality (up to 50%) in baby piglets. Older pigs usually recover after a week. A sensitive ELISA test is available. Control is by sanitary measures, since the virus is mainly spread by human and animal traffic.

Porcine hemagglutinating encephalo-myelitis virus (HEV) A species in the genus Coronavirus. There is only one serotype. Found in North America and Europe, associated with outbreaks of encephalomyelitis in suckling pigs. Antibodies have been reported in herds in Australia and Japan. Most infections are subclinical and the economic importance of the disease is low. There is high mortality in young animals but older animals may survive although they grow less well. Adults may vomit and eat poorly but recover or merely have a silent infection. Virus is found in the respiratory tract but not in other tissues. It may be excreted for up to 10 days. No evidence of infection in utero. Virus replicates in primary pig kidney cell cultures causing the formation of multinucleate giant cells. Agglutinates rat, chicken, turkey, mouse and hamster erythrocytes at 22°C. Synonyms: Canadian vomiting and wasting disease of pigs virus; hemag-glutinating encephalomyelitis virus of pigs; Ontario encephalomyelitis virus; vomiting and wasting disease virus of piglets.

Andries K and Pensaert MB (1980) Am J Vet Res 41, 1372

Mengeling WL and Cutlip RC (1976) J Am Vet

Med Assoc 168, 236

Porcine parvovirus (PPV) A species in the genus Parvovirus. A natural infection of pigs. Has been recovered from infertile pigs and aborted piglets. Causes reproductive failure with prenatal death but without maternal clinical disease. Surviving piglets have virus in various organs up to 9 weeks of age. Has been isolated from cell cultures of kidney tissue from normal pigs. The mechanism of pathogenicity is unknown. Agglutinates chick, rat, guinea pig, cat, rhesus, patas monkey and human O ery-throcytes. Replicates in pig kidney cell cultures. Very similar or identical to KBSH virus. Antigenically different from all other parvoviruses. An attenuated strain (NADL-2) is used as a live vaccine; it causes limited viremia and does not cross the placenta. Complete genome sequences of the vaccine strain and a virulent field strain (Kresse) have been determined.

Bergeron J et al (1996) J Virol 70, 2508 Mengeling WL (1989) In Virus Infections of Porcines, edited by MB Pensaert. Amsterdam: Elsevier, p. 83

porcine poliomyelitis virus See Porcine teschovirus 1.

porcine reproductive and respiratory syndrome virus See Porcine respiratory and reproductive syndrome virus.

Porcine respiratory and reproductive syndrome virus (PRRSV) A species in the genus Arterivirus. Pigs are the only species affected. The disease was first reported in the USA in 1987, then rapidly recognized in Europe and elsewhere. Characterized by reproductive failure, pneumonia in young piglets, and increased preweaning mortality. The genome RNA is about 15kb in length with eight open reading frames (ORFs). Viruses isolated in Europe and the USA have quite distinct genotypes and differences in pathogenicity, and within the USA at least three genotypes have been identified.

Synonyms: porcine epidemic abortion and respiratory syndrome (PEARS); porcine reproductive and respiratory syndrome; Lelystad virus; blue ear disease; swine infertility and respiratory syndrome virus.

Halbur PG et al (1996) Vet Pathol 33, 159 Rowland RRR et al (1999) Virology 259,262 Nelsen CJ et al (1999) J Virol 73, 270

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  • ren
    Is porcine calicivirus tansmissible to humans?
    5 years ago

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