See some speculation about honey packers etc...………….
1. This is not us who have the AFB. EFB a different matter as its the year from hell for stress.
2. Long time ago (1985?) I was on a visit to the old beekeeping unit at Cleeve on the outskirts of Perth. At the time the incumbent expert/inspector/tutor was Bob Couston.
There was a large OS map on the wall with coloured spots for foulbrood cases (mostly American) going back to before the war. The area this seasons finds have been in has a long and serious history of AFB. The spots were so numerous in the Tay valley north of Dunkeld, plus up the A9 as far as Pitlochry, that they overlapped and it was a rash. Look most like its a long standing hotspot of heaven knows what vintage and bees placed in the area are at risk. Most likely ancient ferals in trees or old house roof spaces. Lots of large country houses in the area many of which have multiple ferals of long standing (albeit probably not continuous). Stress year with lots of robbing of the sick? Bingo.
I for one do not blame the affected beekeeper(s) for this.
There but for the grace.....etc etc.