J Vet Sci.  2002 Sep;3(3):159-161.

Seroprevalence of Antibody to Procine Reproductive and Respiratory Syndrome Virus in Diagnostic Submissions

• Kim SM
• Han TU
• Kang SY
• Shin KS
• Kim CJ
• Kim JT
• Kim HS

Abstract

During the period from January to December of 2001, a total of 3,391 swine sera were submitted to our laboratory from 256 farms for the diagnosis of porcine reproductive and respiratory syndrome (PRRS). The antibody to porcine reproductive and respiratory syndrome virus (PRRSV) was tested by the indirect immunofluorescent antibody (IFA) test. Of the 256 farms tested, 230 farms (89.8%) were positive for the PRRSV antibody. The overall seroprevalence of the PRRSV antibody was 52.1% (1765/3391). Most of the pigs seemed to be infected with PRRSV at around 50 to 60 days old. The seroprevalence of the antibody became higher with age, and peaked at around 100 days old. More than one-third of the adult pigs, including boars, gilts, and sows, was positive for the PRRSV antibody. The infection of PRRSV was chronic and confined to growers and/or finishers in most farms. However, the antibody was detected in all production phases at some farms.

Keyword

PRRS virus antibody; Seroprevalence; Indirect immunof luorescent antibody (IFA)test

MeSH Terms

Age Factors
Animals
Antibodies, Viral/blood
Female
Fluorescent Antibody Technique, Indirect/veterinary
Korea/epidemiology
Male
Porcine Reproductive and Respiratory Syndrome/diagnosis/epidemiology/*virology
Porcine respiratory and reproductive syndrome virus/immunology/*isolation &purification
Seroepidemiologic Studies
Sex Factors
Swine