Statistics on AFB are hard to come by, for various reasons. The incidence of active disease may be fairly low, but the presence of disease causing agents is nearly universal. 

> In 2012, AFB was found in 71 beeyards, representing 311 honey bee colonies or 2.5 per cent of inspected colonies in Ontario. 

> Other brood diseases that were tracked by the inspection program include European Foulbrood, Mellisococcus pluton (found in 0.01 per cent of inspected colonies), chalkbrood, Ascophaera apis (found in 5.6 per cent of inspected colonies) and sacbrood (found in 1.4 per cent of inspected colonies).

Kozak, P. (2013). 2012 Provincial Apiarist Report.

> During 2009, P. larvae (AFB) was found in 99% of the apiaries, M. plutonius (EFB)  in 76%, N. apis in 29%, N. ceranae in 99%, ABPV in 14%, BQCV in 83%, CBPV in 90%, DWV in 96%, IAPV in 65%, KBV in 75%, SBV in 85% and VdV1 in 94% of the apiaries.

MOURET, C., et al. (2013). Prevalence of 12 infectious agents in field colonies of 18 apiaries in western France. Revue Méd. Vét, 164(12), 577-582.

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