Aleutian disease

A viral disease affecting minks

A mink, the primary host of Aleutian disease

Aleutian disease is a chronic, progressive disease affecting minks, caused by the Carnivore amdoparvovirus 1, a member of the Parvoviridae family. It is characterized by persistent infection, immune complex formation, and a range of clinical signs that can lead to significant economic losses in the mink farming industry.

Virology

Aleutian disease is caused by the Carnivore amdoparvovirus 1, a small, non-enveloped virus with a single-stranded DNA genome. The virus is highly resistant to environmental conditions and can persist in the environment for extended periods, making control and eradication challenging.

Transmission

The virus is primarily transmitted through direct contact between infected and susceptible minks. It can also spread via contaminated fomites, such as cages, equipment, and clothing. Vertical transmission from dam to offspring is also possible.

Pathogenesis

Upon infection, the virus targets the host's immune system, leading to the formation of immune complexes. These complexes deposit in various tissues, causing inflammation and tissue damage. The kidneys are particularly affected, leading to renal failure in severe cases.

Clinical Signs

Infected minks may exhibit a range of clinical signs, including weight loss, lethargy, and poor fur quality. In advanced cases, neurological signs, such as ataxia and tremors, may occur. The disease can be subclinical in some animals, complicating detection and control efforts.

Diagnosis

Diagnosis of Aleutian disease is based on clinical signs, serological testing, and detection of viral DNA using polymerase chain reaction (PCR). Serological tests detect antibodies against the virus, while PCR can confirm the presence of viral DNA in tissues or blood.

Control and Prevention

Control of Aleutian disease involves strict biosecurity measures, including quarantine of new animals, regular testing, and culling of infected individuals. Vaccination is not currently available, making prevention reliant on management practices.

Impact on Mink Farming

Aleutian disease poses a significant threat to the mink farming industry due to its impact on animal health and productivity. Infected farms may experience reduced reproductive performance, increased mortality, and decreased fur quality, leading to economic losses.

Related pages

• Parvoviridae
• Mink farming
• Viral diseases