> ...might mask the AFB but it doesn't cure it. There was a study done here
in Australia back in the early 1990's, I recall, where AFB infected hives
were given a dose of oxytetracycline. In the hives, it looked good for a
while and the clinical symptoms were gone but those hives did break down
with AFB at a later stage. Some took up to 15 months.

I think the results of such experiments might vary with the bees chosen.  In
my experience with Austrialian packages compared to Kona bees, the Aussies
showed AFB in several hives, but the Konas did not.

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