Long-term lack of transmission of Aujeszky's disease virus (ADV) in a chronically infected Swedish weaner pig producing herd

Marie Engel, David W. Hird, Tim Carpenter, Martin Wierup

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A cohort of 53 swine seronegative to Aujeszky's disease virus (ADV) was monitored in a 1 year study of a chronically infected commercial Swedish weaner pig producing herd. Serum samples were acquired from all 134 adult swine and analyzed by enzyme-linked immmunosorbent assay (ELISA). Animals testing negative, along with introduced replacement gilts, were followed serologically every second month. Movements of animals were recorded for 319 days and exposure to seropositive animals was calculated for each seronegative pig in the cohort. The accumulated daily pig contact between the 53 ADV-non-infected swine and 43 infected swine was 35 660 days and the median number of days in contact for the non-infected swine with infected was 222. Despite the frequent contact with seropositive pigs, no seronegative animals seroconverted during the first 11 months of observation. Forty-six of 53 pigs seroconverted after a clinical outbreak during the twelfth month of observation.

Original languageEnglish (US)
Pages (from-to)245-252
Number of pages8
JournalPreventive Veterinary Medicine
Volume24
Issue number4
DOIs
StatePublished - Jan 1 1995

Keywords

  • Aujeszky's disease
  • Pseudorabies
  • Serological study

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology

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