>
> >Randy, can you provide some more information.


G'day Trevor,

I can't find the ref that I was referring to.  However, Farmnote 247 from
Western Australia stated:

The severity of [sacbrood] infection can vary in some hives from

a few cells per frame to 90 per cent of the brood. The

number of colonies infected in an apiary may range

from 0 to 100 per cent.

****************************************************
* General Information About BEE-L is available at: *
* http://www.honeybeeworld.com/bee-l/default.htm   *
****************************************************