Germany has announced 365 new E. coli cases as the government is in a race against time to trace the origin of the deadly outbreak.
Spain, meanwhile, is considering legal action against German regional authorities for blaming the epidemic on Spanish cucumbers.
Berlin has since admitted that Spanish cucumbers show no signs of carrying the dangerous bacteria responsible for the fatalities.
Scientists are now looking into the possibility that spinach or salads might be the cause because of the animal manure used as fertiliser.
Miguel Jimenez Aguijarte from the Murcia Farmers Association said: “I hope this problem can be solved in 10 or 15 days.”
The admission that Spanish produce was not responsible for the outbreak has come too late to halt the damage to the Spanish economy at a time when the country is mired in financial problems and rampant unemployment.