Work

Porcine reproductive and respiratory syndrome virus type 1 and type 2 co-infection in a Japanese swine herd

Year: 2025

Type: article

Abstract: The status of co-infection with porcine reproductive and respiratory syndrome virus type 1 (PRRSV-1) and type 2 (PRRSV-2) in Japan is poorly understood. A case of such co-infection was identified on a PRRSV-1 non-vaccinated farm in Kagoshima prefecture. Both PRRSV-1 and PRRSV-2 genomes were simultaneously detected in pig samples by RT-PCR, and molecular analysis confirmed PRRSV-1/PRRSV-2 co-infection in individual piglets. The PRRSV-1 strain (020-P4-EU) was classified as lineage 1 (sublineage: L1.2), showing high similarity to the Unistrain® PRRS vaccine and a Korean strain. The PRRSV-2 strain belonged to lineage 4 (Cluster III). These findings provide molecular evidence of PRRSV-1/PRRSV-2 co-circulation in Japan, suggesting the complex epidemiology of PRRSV in this region.

Source: Journal of Veterinary Medical Science

DOI: 10.1292/jvms.25-0279

Authors: Osamu TAIRA, Akira FUJIWARA, Ryosuke TAKAI, Nobuyuki TSUTSUMI, Katsuaki SUGIURA

Institutions: Nippon Institute for Biological Science, The University of Tokyo

Language: English

Topic: Animal Virus Infections Studies

Subfield: Animal Science and Zoology

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W4414048971

FWCI: 2.332

Cites: 26

Cited by: 4

Related to: 10