Seroprevalence of Swine Influenza A Virus (swIAV) in Commercial Pig Farms in Greece (2023–2026): Age, Regional and Temporal Patterns
Swine influenza A virus (swIAV) is an endemic respiratory pathogen of pigs with zoonotic relevance. We analysed retrospective serological data from routine diagnostic submissions (January 2023–May 2026) to a single laboratory, comprising 2003 sera from 66 reports on 44 commercial farrow-to-finish farms in seven regions...