Three hospital patients have died in England following an outbreak of listeria linked to pre-packed sandwiches, Public Health England (PHE) has said.
The cases relate to different hospitals, and it is not clear at this stage where the sandwiches were bought.
Those who died were at Manchester University NHS Foundation Trust and Aintree University Hospital NHS Foundation Trust in Liverpool.
PHE said sandwiches and salads linked to the cases have been withdrawn and the supplier, The Good Food Chain, has voluntarily ceased production while the investigation continues.
The Good Food Chain had been supplied with meat produced by North Country Cooked Meats which tested positive for the outbreak strain of listeria. North Country Quality Foods has also voluntarily ceased production.
The cases of listeria infection were in six seriously-ill hospital patients in England, three of whom died.
Dr Nick Phin, deputy director at the National Infection Service at PHE, said: “Our thoughts are with the families of those patients who have died.
“We, along with the FSA, colleagues in local authorities and the NHS, have worked quickly to determine the likely cause of this outbreak and taken action to reduce the risk to the public’s health.
“To date, there have been no associated cases identified outside healthcare organisations and any risk to the public is low.”