Beekeeping Information

What is Deformed Wing Virus?


Honey bees are fascinating creatures that play a crucial role in pollinating plants and producing honey. Unfortunately, they are also susceptible to a variety of diseases and pests. One of the most concerning diseases affecting honey bees is deformed wing virus (DWV).

In this article, we will explore what DWV is, how it affects bees, and what can be done to prevent and manage its spread.

What is deformed wing virus?

DWV is a type of virus that affects honey bees. It belongs to the family Iflaviridae and is known for causing deformities in bee wings, hence its name. The virus is transmitted by the varroa mite, a parasitic mite that feeds on the blood of bees and can weaken their immune systems. DWV can have significant impacts on bee health, as it can lead to reduced longevity, impaired mobility, and even death.

Symptoms and effects of deformed wing virus on bees

DWV affects both adult bees and larvae. In adult bees, it can cause deformed wings, which can make it difficult or impossible for them to fly, gather nectar and pollen, or regulate temperature in the hive. Bees with deformed wings are also more vulnerable to predation and other threats. In larvae, DWV can cause delayed growth and development, which can lead to premature death.

In addition to the direct impacts on bee health, DWV can also have significant consequences for the environment. Bees are essential pollinators for many flowering plants, and their decline can have cascading effects on ecosystems and food systems.

Furthermore, honey bees are of significant economic importance, as they contribute to the production of many crops and agricultural products. The spread of DWV can, therefore, have far-reaching impacts on human society as well.

How is deformed wing virus transmitted?

virus short wing

As mentioned earlier, DWV is primarily transmitted by the varroa mite. These mites can infect bees with the virus when they feed on their blood. Once infected, bees can also transmit the virus to other bees through contact or exchange of bodily fluids.

Furthermore, DWV can be transmitted through infected hive tools or equipment, which can spread the virus between colonies. The virus can also survive outside of bee hosts for extended periods, which can make it challenging to control its spread.

Prevention and management of deformed wing virus

Preventing and managing DWV requires a multi-faceted approach. The first step is to monitor bee colonies regularly for signs of the virus and varroa mite infestation. Early detection allows for prompt treatment and can prevent larger outbreaks from occurring. Beekeepers can also take steps to reduce the risk of mite infestation, such as keeping hives clean and well-ventilated, and using integrated pest management strategies.

Another method for managing DWV is to breed bees that show resistance to the virus. Recent research has shown that some strains of honey bees are less susceptible to the virus or can recover from infections more easily. Selective breeding can, therefore, be an effective way to strengthen bee populations and reduce the impact of DWV.

Additionally, limiting the movement of hive tools and equipment between colonies can help to prevent the spread of the virus.


Deformed wing virus is a severe threat to honey bee populations and the environment. Its impacts can be far-reaching and have significant consequences for human society as well.

Effective prevention and management of DWV require a collaborative effort by beekeepers, researchers, and policymakers. By monitoring bee colonies regularly, reducing the risk of mite infestation, breeding resistant bee strains, and minimizing the spread of equipment between colonies, we can help to preserve honey bee health and ensure a sustainable future for our ecosystems and food systems.


What is Deformed Wing Virus?

  • Deformed Wing Virus is a type of virus that infects honeybees and can cause malformations in their wings, making it difficult to fly and gather food.

How does Deformed Wing Virus affect bee colonies?

  • Deformed Wing Virus can cause significant damage to bee colonies, as it weakens individual bees and makes them less effective at collecting nectar and pollen. It can also spread rapidly throughout a hive, potentially leading to the collapse of the entire colony.

How is Deformed Wing Virus spread?

  • Deformed Wing Virus can be spread through several means, including contact with infected bees or contaminated honey, and may also be transmitted through varroa mites that feed on honeybees.

Can Deformed Wing Virus be treated?

deformed wing virus treatment
  • While there is no cure for Deformed Wing Virus, there are several steps beekeepers can take to prevent its spread, including regular hive inspections and the use of treatments such as Formic Acid or Oxalic Acid Strips.

What are the symptoms of Deformed Wing Virus in honeybees?

  • Some common symptoms of Deformed Wing Virus include misshapen wings, difficulty flying or walking, and a diminished ability to gather food.

How can beekeepers prevent the spread of Deformed Wing Virus in their hives?

  • Several methods can be used to prevent the spread of Deformed Wing Virus, including ensuring proper hive hygiene, monitoring bees for signs of infection, and using treatments to control varroa mites.

Is Deformed Wing Virus harmful to humans?

  • Deformed Wing Virus is not dangerous to humans, and is not known to be capable of infecting people.

Is Deformed Wing Virus a common problem in beekeeping?

  • Yes, Deformed Wing Virus is a common issue in beekeeping and can be a significant challenge for beekeepers, particularly those that do not take proper steps to prevent its spread.

Can Deformed Wing Virus cause long-term damage to a bee colony?

  • Yes, Deformed Wing Virus can cause significant long-term damage to a bee colony if it is not appropriately managed. Infected bees may be less effective at collecting food and caring for the hive, allowing other pests, diseases, or stressors to impact the colony’s health.

How can I help prevent the spread of Deformed Wing Virus as a beekeeper?

  • Beekeepers can help prevent the spread of Deformed Wing Virus by maintaining proper hive hygiene, regularly inspecting their hives for signs of infection, and promptly treating and isolating any infected bees or hives.

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