We have been seeing cases of EFB up here in the Pacific Northwest this year. In past years it really hasn’t been much of a problem here, and so our local beekeeping club members aren’t well versed in dealing with it. I know that removing infected comb is helpful to reduce the impact on colonies. My question is does anybody have information on how effective glacial acetic acid fumigation of equipment is in killing off any EFB contamination on those combs and on brood boxes? Also, does anyone know how long the bacterium stays infective on combs if they are just left to sit without bees on them?
Mark Salser
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