Marie Culhane

Introduction:Influenza A viruses (IAVs) are endemic in North American swine and cause a respiratory disease. However, the mechanisms that allow IAVs to persist in pigs after weaning are not clearly understood. The objective of this study was to characterize the antigenic diversity of IAV during two contiguous epidemic waves of infection in pigs after weaning.Materials and Methods:One hundred and t ...

Introduction:Influenza A viruses (IAVs) are a main cause of respiratory disease in pigs and endemic in North American swine, however the mechanisms that allow IAVs to persist in pig herds are not clearly understood. The objective of this longitudinal study was to characterize the genetic diversity of IAV in pig breeding herds using next generation sequencing technologies.Materials and Methods:Five ...

1 IntroductionGlobal consumption of pork has increased greatly, making it the second most consumed meat, representing > 34% of global meat consumption (2022 estimates) (1, 42). Studies reveal a 77% growth in pork demand from 1990 to 2022 (2) and with the growing world population and economic growth, the demand is likely to continue growing (2, 3). Consequently, global pig production has grown b ...

Introduction:Gastrointestinal disease is one of the leading causes of clinical signs in growing and finishing pigs. We herein describe several diagnostic cases of finisher pig colitis wherein both novel and common pathogens were discovered.Materials and Methods:Necropsies of 5 pigs, 10-13 weeks of age, with diarrhea and weight loss, were performed at two swine farms, each housing > 15,000 growi ...

Introduction: Most common influenza A virus (IAV) control measures include sow vaccination using prefarrow, mass or a combination of prefarrow and mass vaccination protocols with either commercial, autogenous or both vaccines. Piglets prior to wean are important in the maintenance of influenza infections in breeding herds as well as in the dissemination of the virus into wean-to-finish facilities. ...

Introduction:Over the last 15 years, genetically and antigenically distinct groups of influenza A viruses in swine (IAV-S) have emerged. The 2009 pandemic H1N1 virus and variant H3N2 viruses of swine-origin underscore the threat that IAV-S pose to public health. Consequently, there is greater need for increased IAV-S surveillance globally. This is particularly important in regions where there is v ...