I don't think that there has ever been a problem of this sort from British
grown lettuce.
It seems as if this was all from lettuce used by one chain of Burger outlet
(MMakes you think).
I should think that the results of the salmonella would remove any beef from
the system that could cause mad cow disease.

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk