according to Bailey & Ball (1991):

Shaking adult bees from diseased colonies onto new combs has often
been tried but the method is unreliable. In one investigation disease
incidence could not be decreased below 2%; in another, 81 colonies out
of 300 redeveloped disease in the following two years. The method was
officially endorsed in Denmark but, after many years, American
foulbrood remained the commonest honey bee disease in the country. The
combs that have to be destroyed are at least as valuable as the bees.

-- 
Peter L Borst
Danby, NY USA
42.35, -76.50
http://picasaweb.google.com/peterlborst

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