An urgent national recall has been issued for pre-packaged lettuce and green vegetables that have been linked to a salmonella outbreak.
The Victorian Department of Health and Human Services said it had identified a number of cases of the infection linked to a variety of lettuces grown and packaged by Victorian company Tripod Farmers.
It is sold at Coles and Woolworths as Coles 4 Leaf Mix, Woolworths salad mix, SupaSalad Supamix and Wash N Toss salad mix.
Spinach, kale and watercress have also been affected.
The affected products have best before dates leading up to and including February 14.
The health department identified the lettuce after recording an usually high level of salmonella anatum strain infections and traced a number of those back to the products.
"Normally we only see a handful of cases of this strain each year, but so far this year there have seen 28 adult cases of salmonella anatum – mostly adults – notified to the department," senior medical advisor Dr Finn Romanes said.
"As a result of following up the food histories of a number of people we have discovered a common source - the Tripod Farmers lettuce.
"Tests of three products from two batches have also tested positive for salmonella anatum bacterium."
Tripod Farmers is issuing a national recall of the products and anyone who has them at home should either throw them out or return them to the place of purchase.