What is Wallemia SP

Wallemia sp is a xerophilic fungus that was discovered named after a 19th century Norwegian fish inspector. It is commonly found living on products that have high levels of salt or sugar. This may include jams, bread, cakes, sugar, and salted meats and fish. Additionally, it can be found in indoor air, house dust, and the soil.

This fungus is significantly affected by how much water is available to it nearby. It needs a certain level of moisture within the environment in order to stay alive. However, it does have a remarkable ability to adapt to various environmental conditions. This makes it more tolerable to lower water levels within the environment than many other microorganisms.

Wallemia sp has been found to exist within hair, hay, textiles, and elsewhere on individuals. It has a slow growth rate when it does not have ideal growing conditions. However, if optimal conditions are met, it can spread rapidly.

Symptoms of Wallemia SP

There is only a slight risk of infection in humans from Wallemia sp. What is known is that it is a confirmed allergen. However, infections are so rare that only three reports have been documented. All of these infections were either cutaneous or subcutaneous.

Allergic reactions are common with Wallemia sp, given the millions of spores produced by it. The spores are smaller than spores from other fungi, making them more lightweight and more easily inhaled by humans. Respiratory issues may be experienced. Farmer’s lung disease has been associated with Wallemia sp, which is a type of bronchial asthma. People working on farms and in stables and barns may be exposed to this fungus, which can lead to breathing in large amounts of its spores. Some symptoms of this include the following:

  • Coughing
  • Fatigue
  • Headaches
  • Fever


Treatment of Wallemia sp usually involves changing the environment in which the allergic reaction has occurred. Since there is little risk of getting a fungal infection, respiratory issues are the primary concern. Symptoms clear up after you are no longer exposed to the airborne spores.


To prevent getting infected by Wallemia sp, avoid environments that are conducive to being breeding grounds for the fungus. This includes farms, barns, and stables. If you cannot avoid these, wearing a face mask or respirator.


The cure for Wallemia is to simply remove yourself from the environment in which it exists. The symptoms will clear up on their own quickly, without needing to take any additional measures.

How Alliance Enviro-Tech Can Help

Wallemia sp is a fungal infection that rarely shows up in humans. The greater threat is an allergic reaction due to inhaling the minuscule spores. Avoid breathing in air that may contain fungal spores, and avoid touching plant matter like hay with the fungus, in order to reduce the risk of an infection that can cause harm to your health. You will want to ensure that you are not placing yourself at risk of succumbing to this fungal infection. It is important to be aware of all potential ways fungi can spread in your home or office.

Alliance Enviro-Tech can disinfect both residential and commercial spaces thoroughly. Our Path-Guard® System and Path-Away Anti-Pathogenic Aerosol Solution® can kill Wallemia sp, as well as other fungi, bacteria, and viruses, in under five minutes, giving you peace of mind to know your place is a healthier space. Contact us to learn more about how we can help.