Brain lesions caused by WEE virus infection are focal and have lymphocytic infiltrations. Brain lesions caused by EEE virus infection are more severe and are found throughout the grey matter. They are characterised by a larger number of neutrophils among the inflammatory cells. | Brain lesions caused by WEE virus infection are focal and have lymphocytic infiltrations. Brain lesions caused by EEE virus infection are more severe and are found throughout the grey matter. They are characterised by a larger number of neutrophils among the inflammatory cells. |