Canadian authorities have warned people off eating any Romaine lettuces until the source of the bacteria has been ascertained. https://www.theglobeandmail.com/can...-to-eat-romaine-lettuce-amid-e-coli-outbreak/
E.coli enjoys a liquid environment, so hydroponic lettuces would be prime suspects and would be presumed guilty until proven innocent. This would undoubtedly include Roto-Grown produce when it becomes available.
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