American and European Foulbrood

Image: Brood infected with European Foulbrood. Photo by M.V. Smith. Credit: Zach Huang

      American and European Foulbrood are two different, yet similar bacterial diseases of honey bee larvae and pupae. The name comes from the location of first discovery and foulbrood describes the putrid smell of honey bee brood infected with these pathogens. American Foulbrood, although rare, is one of the only regulated honey bee diseases because of the virulent pathogenicity, ease of spreading the disease, and limited control measures. European Foulbrood is less severe and can be common. Both are treated with the same chemical, although recognition and differentiation is crucial to managing honey bee colony health.
      Below are articles that describe diagnosis of the disease, treatment options, and considerations to limit the impact of these pathogens.