If pseudocowpox Pseudocowpox in Cattle The parapox virus of pseudocowpox (electron microscopy, low magnification of 20,000x) in a skin scraping from a clinically affected cow, visualized by mixing a heavy metal stain (phosphotungstic... read more 
is present in a cattle herd, calves and young cattle may show similar lesions on the muzzle and within the mouth, particularly on the hard palate. Bovine papular stomatitis is generally considered to be caused by another parapoxvirus closely related to the viruses causing pseudocowpox Pseudocowpox in Cattle The parapox virus of pseudocowpox (electron microscopy, low magnification of 20,000x) in a skin scraping from a clinically affected cow, visualized by mixing a heavy metal stain (phosphotungstic... read more and orf.
Although the disease is of little clinical importance, the presence of circular lesions in the mouth can raise the suspicion that they are ruptured vesicles associated with reportable diseases, such as foot-and-mouth disease Foot-and-Mouth Disease in Animals Foot-and-mouth disease is one of the world's most economically important viral diseases of livestock. The virus infects cattle, pigs, and sheep and many cloven-hoofed wildlife species. The infection... read more 
and vesicular stomatitis Vesicular Stomatitis in Large Animals Vesicular stomatitis (VS) is a viral disease of livestock transmitted primarily by biting flies and midges. The disease results in characteristic vesicular lesions that can occur on the muzzle... read more . The diagnostic tests for pseudocowpox are applicable to bovine papular stomatitis.
