![Microscopic lesions consistent with influenza infection include necrosis of the bronchiolar epithelium where the virus replicates](https://www.pig333.com/3tres3_common/art/pig333/9426/microscopic-lesions-consistent-with-influenza-infection_77412.jpg?w=650&h=366&ho=1&ts=1653979446)
Detection and diagnosis of Influenza A virus infection and clinical disease in swine
As the Influenza A virus ecology has become more complex due to viral reassortment and mutation, so have the sample types and diagnostic tests available for detecting or diagnosing influenza infections in swine.