I have a feeling fireblight may have come up more than once last year but I believe I brought it up the winter before last becuase 3 sites I manage had suffered light to moderate damage on some trees- especially Bosc pears.
I meant to post the fact that without any special treatment besides cutting back blighted branches and without adequately removing all the galls on larger branches on one particular site, I had no significanct recurrence of FB last season. This in spite of dire warnings in one post that once FB has reared its ugly head it will be a permanent presence in any orchard. I'll see what the truth is to that statement in the next few years, I guess, but right now I'm encouraged.
[NAFEX] Last years fireblight discussion,
Alan Haigh, 05/10/2009