Evaluation of porcine reproductive and respiratory syndrome virus replication in laboratory rodents

Paul Rosenfeld, Patricia V. Turner, Janet I. MacInnes, Éva Nagy, Dongwan Yoo

Research output: Contribution to journalArticlepeer-review

Abstract

Porcine reproductive and respiratory syndrome virus (PRRSV) is a major cause of economic losses in the swine industry. The disease is widespread worldwide, and so PRRSV-negative pigs are often difficult to find for the study of PRRSV in vivo. To determine if a small animal model could be developed for PRRSV, 3 strains of laboratory rodent were examined for their susceptibility to the virus. No virus replication was detected in BALB/c or SCID (severe combined immunodeficiency) mice after intraperitoneal inoculation. Moderate replication of PRRSV was detected in primary cotton rat lung cell cultures, but no viral replication was detected following intranasal or intraperitoneal inoculation. Following intratracheal inoculation, viral transcripts were detected in the lungs of cotton rats, but only for 1 day. This study indicates that PRRSV replication in common laboratory rodent species is inefficient, and suggests that a rodent model for this virus is not appropriate.

Original languageEnglish (US)
Pages (from-to)313-318
Number of pages6
JournalCanadian Journal of Veterinary Research
Volume73
Issue number4
StatePublished - Oct 1 2009

ASJC Scopus subject areas

  • veterinary(all)

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