Porcine reproductive and respiratory syndrome virus 2 in Europe: neither wild nor tamed.

ABSTRACT:

Background

Porcine reproductive and respiratory syndrome virus (PRRSV) exhibits a marked geographical clustering, with PRRSV-2 being predominantly found in North America and Asia. Its presence in Europe remains extremely limited and mainly represented by vaccine-like strains, belonging to sublineage 5.1. While the use of this vaccine is possible and applied in Northern Europe, its detection in Southern European countries has been largely anecdotal.

Results

In the present study, we report the first confirmed case of PRRSV-2 detection in Italy, identifying two independent introduction events with no clear epidemiological link. A deeper evaluation of the overall epidemiological end evolutionary patterns of MLV-derived strains was performed to elucidate the present study finding

SUBMITTER: Franzo G 

PROVIDER: S-EPMC12752272 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature