This episode of the Turkey Talk Show features Dr. Silva Carnaccini of Iowa State University discussing REV (Reticuloendotheliosis Virus), a retrovirus that can affect turkeys and other bird species. Dr. Carnaccini explains that REV is found in both commercial and wild bird populations, can be transmitted vertically (from breeder hens to offspring) and horizontally (through environmental exposure and insects such as flies and mosquitoes), and may cause immunosuppression, poor growth, abnormal feathering, secondary infections, and in some cases tumors (lymphomas). There is currently no treatment or vaccine, so prevention focuses on biosecurity, pest control, flock monitoring, and testing through PCR and antibody screening. Iowa State is conducting surveillance to better understand how widespread and significant REV may be in turkey flocks, and producers are encouraged to submit samples from young poults, pre-processing birds, or birds with suspected tumors to support ongoing research and disease monitoring efforts.
In this episode, Dr. Silva Carnaccini from Iowa State University discusses REV (Reticuloendotheliosis Virus), a retrovirus that can infect turkeys and other bird species. REV is already present in wild bird populations and can spread both vertically (from breeder hens to offspring) and horizontally (between birds through the environment, direct exposure, and insect vectors such as flies and mosquitoes). Birds infected early in life may experience immunosuppression, poor growth, abnormal feathering, and increased susceptibility to secondary infections. In some cases, REV can also cause lymphoid tumors (lymphomas). Testing is available through PCR and antibody screening, but there is currently no vaccine or treatment for the disease.
For turkey farmers, the key takeaway is that biosecurity and pest control remain critical management tools. Because flies and other insects can contribute to virus spread, maintaining strong fly-control programs and minimizing wildlife exposure are important preventive measures. The virus does not survive well outside the host and can be controlled through proper cleaning and disinfection between flocks. Iowa State University is actively investigating the prevalence and impact of REV in commercial turkey production and is encouraging producers to participate in surveillance efforts by submitting samples from young poults, birds near processing age, or any birds showing tumors or unexplained health issues. Increased participation will help researchers better understand the disease and determine its significance to the turkey industry.