I've never seen AFB, but EFB was quite scary enough. At least I didn't have to burn my hive, just scorched boxes, destroyed all frames or removed comb depending on what they were made of, wood scorches better than plastic, honeycomb is safer than brood comb.
Bee inspector said just medicate and requeen but I had literally watched it spread through my apiary when I stole honey from a dying hive, so I stole ALL the honey, melted ALL the wax, medicated. Couldn't get queens and really didn't want to, the 2 that survived of my 5 hives had some pretty stout queens.
Pulled through. Ate the honey. still haven't made the candles.