A worldwide emerging disease of weaned piglets first recognized in swine herds in western Canada in 1997. This syndrome is characterized by progressive weight loss, rapid (tachypnea) and difficult (dyspnea) breathing, and yellowing of skin. PMWS is caused by PORCINE CIRCOVIRUS infection, specifically type 2 or PCV-2.

A condition of involuntary weight loss of greater then 10% of baseline body weight. It is characterized by atrophy of muscles and depletion of lean body mass. Wasting is a sign of MALNUTRITION as a result of inadequate dietary intake, malabsorption, or hypermetabolism.

A genus of the family CIRCOVIRIDAE that infects SWINE; PSITTACINES; and non-psittacine BIRDS. Species include Beak and feather disease virus causing a fatal disease in psittacine birds, and Porcine circovirus causing postweaning multisystemic wasting syndrome in pigs (PORCINE POSTWEANING MULTISYSTEMIC WASTING SYNDROME).

Virus diseases caused by the CIRCOVIRIDAE.

Diseases of domestic swine and of the wild boar of the genus Sus.

A species of PARVOVIRUS causing reproductive failure in pigs.

Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).

A family of very small viruses containing circular, single-stranded DNA and possessing no envelope. The modes of transmission are not known.

Permanent deprivation of breast milk and commencement of nourishment with other food. (From Stedman, 25th ed)

A genus in the family PICORNAVIRIDAE that can cause polioencephalomyelitis in pigs. The type species Porcine teschovirus is comprised of multiple strains.

Virus infections caused by the PARVOVIRIDAE.

A syndrome characterized by outbreaks of late term abortions, high numbers of stillbirths and mummified or weak newborn piglets, and respiratory disease in young unweaned and weaned pigs. It is caused by PORCINE RESPIRATORY AND REPRODUCTIVE SYNDROME VIRUS. (Radostits et al., Veterinary Medicine, 8th ed, p1048)

They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.

Deoxyribonucleic acid that makes up the genetic material of viruses.

Involuntary weight loss of greater than 10 percent associated with intermittent or constant fever and chronic diarrhea or fatigue for more than 30 days in the absence of a defined cause other than HIV infection. A constant feature is major muscle wasting with scattered myofiber degeneration. A variety of etiologies, which vary among patients, contributes to this syndrome. (From Harrison's Principles of Internal Medicine, 13th ed, p1611).

In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.

A technique that localizes specific nucleic acid sequences within intact chromosomes, eukaryotic cells, or bacterial cells through the use of specific nucleic acid-labeled probes.

A characteristic symptom complex.

Immunoglobulins produced in response to VIRAL ANTIGENS.

Refers to animals in the period of time just after birth.

Substances elaborated by viruses that have antigenic activity.

Histochemical localization of immunoreactive substances using labeled antibodies as reagents.