Paenibacillus larvae is the causative agent of American Foulbrood (AFB), a severe disease
that affects larvae of the honeybees. Due to the serious effects associated with AFB and the
problems related to the use of antibiotics, it is necessary to develop alternative strategies for
the control of the disease. The aim of the present work was to evaluate the effect of a
propolis ethanolic extract (PEE) against P. larvae and its potential for the control of AFB. In
vitro activity of PEE against P. larvae isolates was evaluated by the disk diffusion method …