Peter Keating wrote

> what temperatures are required to kill AFB spores in honey?

There is a good article on killing AFB in honey.  The reference is:-

"Thermal resistance of Bacillus larvae spores in honey" by Eleanor J. Calesnick and Jonathan W. White Jr. from Journal of Bacteriology Vol 64 1952 pages 9-15 inclusive.

Of course, the name for AFB has now changed from Bacillus to Paenibacillus but the article is from 1952.

Hope this helps Peter.

Regards

Trevor Weatherhead