Bovine papular stomatitis
A mild zoonotic poxvirus affecting cattle and dairy workers.
Bovine papular stomatitis is a zoonotic farmyard pox caused by Bovine papular stomatitis virus (BPSV), a member of the family Poxviridae and genus Parapoxvirus. It occurs worldwide in cattle, particularly in high-stress environments such as fattening facilities, and can spread to humans, typically causing mild skin lesions on the hands or forearm.
- causative_agent
- Bovine papular stomatitis virus (BPSV)
- family
- Poxviridae
- genus
- Parapoxvirus
- size
- approximately 320 nm by 190 nm
- shape
- egg-like
- affected_species
- cattle and humans
- zoonotic
- yes
Lore & Background
Bovine papular stomatitis virus (BPSV) causes raised, erosive lesions on the muzzle, lips, cheek linings, and udders of cattle, often before the age of two years. Lesions can vary in size, sometimes about that of a soybean, and secondary bacterial infections may occur. In immunocompromised animals, systemic disease with virus particles in blood or lymphatics and hyperkeratosis has been observed. Recurrence rates of up to 53% over several years have been reported, and many cattle may be asymptomatic carriers.
Reader's Guide
In humans, BPSV is generally mild, with lesions known as milker's nodules appearing on the hands or fingers. It is considered a neglected zoonosis due to its lack of severity and is often grouped with other parapoxviruses. A surveillance program at Auburn University College of Veterinary Medicine in the late 1970s found only 2 probable cases among 59 students with frequent bovine oral exposure, leading to the conclusion that BPSV is low on the list of zoonoses in terms of public health importance. The virus encodes a viral vascular endothelial growth factor (vVEGF) and a chemokine binding protein (BPSV-CBP) that broadly binds CC, CXC, and XC chemokines, potentially delaying adaptive immune responses. BPSV has been explored as a viral vector for vaccines due to its ability to carry foreign DNA, its weak immune response, and its preference for mucosal surfaces; a recombinant BPSV strain expressing Bovine Herpesvirus 1 glycoproteins showed no adverse effects and elevated antibody titers.
Did You Know?
- BPSV is slightly larger than a typical parapoxvirus, measuring about 320 nm by 190 nm.
- A survey found that the majority of oral swabs from healthy calves tested positive for BPSV DNA.
- BPSV-CBP binds a broader spectrum of chemokines than type II CBPs from Orthopoxviruses, including CC, CXC, and XC chemokines.
- In a study, a recombinant BPSV strain expressing BoHV-1 glycoproteins showed replication rates similar to wild-type BPSV in vitro.
Frequently Asked Questions
Who is Bovine papular stomatitis?
Bovine papular stomatitis is a mild zoonotic pox infection that primarily targets cattle but can also infect humans. It is caused by BPSV, a parapoxvirus whose particle is roughly 320 by 190 nanometres and egg-shaped.
What are Bovine papular stomatitis's powers/role?
Its main 'power' is triggering small papular skin lesions, typically on the hands or forearms of infected dairy workers and on the mouth or teats of cattle. It thrives in high-stress environments such as fattening sheds, where it spreads readily among herds.
How does Bovine papular stomatitis's story end?
In both cattle and humans the lesions are generally self-limiting and resolve without serious complications. There is no dedicated antiviral therapy; management centres on supportive care and tightening biosecurity to stop further transmission.
Why is Bovine papular stomatitis important?
It matters because it bridges the farm and the human worker, reminding us that even a mild pox can cross species barriers. For veterinarians and dairy staff it is a routine zoonotic hazard worth recognising and reporting.
What's Bovine papular stomatitis's origin story?
The culprit is Bovine papular stomatitis virus, a member of the Poxviridae family and the Parapoxvirus genus. It circulates worldwide wherever cattle are kept, making it one of the most geographically widespread bovine pox infections.
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