A majority of the salad providers in California fear the contamination of the spinach products with the E. coli bacteria.

The anticipations have now given way to a recall ordered by Fresh Express.

The food provider has directed the recall of 23 varieties of Romaine salads packs bearing the best before date of July 8-12, told Salinas.

About four years back, the packs of spinach contaminated with E. coli bacteria, claimed hundreds of lives in California.

"The outbreak four years ago was the tipping point for the industry, and it realized taking steps to address the problem”, said Scott Horsfall, CEO Leafy Greens Marketing group.

So far, this year, no cases of infections or sickness due to the consumption of the products have been reported. The contamination concerns were raised after the FDA conducted a test on lettuce samples.

FDA’s recent enquiry has aroused concerns over the way; the spinach is being grown in the farms.

The lettuce samples have been set across to more than 19 states in the country. The retailers in all these regions are now being instructed to check for the stocking of these samples in their stores.