Sealpox

A viral infection affecting seals

Sealpox is a viral infection that primarily affects seals, particularly those in the Phocidae family. It is caused by the sealpox virus, which is a member of the Parapoxvirus genus. This disease is characterized by the formation of skin lesions and is considered a zoonotic infection, meaning it can be transmitted from animals to humans.

Virology

The sealpox virus is a type of Parapoxvirus, which is a genus of viruses known to cause skin lesions in various animal species. The virus is enveloped and has a double-stranded DNA genome. It is closely related to other parapoxviruses such as the Orf virus and the Bovine papular stomatitis virus.

Transmission

Sealpox is primarily transmitted through direct contact with infected seals or contaminated surfaces. The virus can enter the body through cuts or abrasions in the skin. In seals, the virus spreads easily in crowded environments such as seal colonies or rehabilitation centers.

Symptoms in Seals

Infected seals typically develop nodular skin lesions, which can vary in size and number. These lesions are often found on the head, neck, and flippers. The lesions may ulcerate and become secondarily infected with bacteria. Affected seals may also exhibit signs of general malaise, such as lethargy and reduced appetite.

Zoonotic Potential

Humans can contract sealpox through direct contact with infected seals or contaminated materials. In humans, the infection usually results in localized skin lesions that resemble those seen in seals. These lesions are generally self-limiting and resolve without treatment, but they can be painful and may require medical attention if secondary bacterial infection occurs.

Diagnosis

Diagnosis of sealpox in seals is typically based on the appearance of characteristic skin lesions and the history of exposure to other infected animals. Laboratory confirmation can be achieved through polymerase chain reaction (PCR) testing, which detects the presence of viral DNA in tissue samples.

Treatment and Management

There is no specific antiviral treatment for sealpox. Management of the disease in seals involves supportive care, including maintaining hydration and nutrition, and preventing secondary bacterial infections. In rehabilitation settings, infected animals should be isolated to prevent the spread of the virus to other seals.

Prevention

Preventive measures include minimizing direct contact with infected animals and implementing strict hygiene protocols in facilities that house seals. Personal protective equipment (PPE) should be used by individuals handling infected animals to reduce the risk of zoonotic transmission.

Related pages

• Parapoxvirus
• Zoonosis
• Orf virus
• Bovine papular stomatitis virus