> 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.

Thanks for the reply Randy.  Seems excessive to me and I will follow it up 
and post back.

Trevor Weatherhead
AUSTRALIA 

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