An urgent warning has been issued due to an outbreak of a deadly bug from pre-packed food.
The bacteria salmonella has been found in chicken, wraps and sandwiches which are ready to eat.
Around 81 cases have been detected in people infected and one person has died, the European Centre for Disease Prevention and Control (ECDC) says.
The infections form a wider outbreak of the bug where 196 cases have been recorded in Europe, Israel and in parts of the UK.
The organisation said "several" food distributors could have passed on the bug.
And new cases are "likely to occur" until a "common source" is pinpointed.
Prof Paul Wigley, whom has expertise in animal microbial ecosystems at the University of Bristol said it is "unclear" and is difficult to say which type of chicken people should avoid either fresh or pre-cooked.
He warned: "However, given both the risk of salmonella and more frequently campylobacter, another food poisoning bacterium, on raw chicken, it should be handled with care and hygienic practice in the kitchen and all poultry meat should be thoroughly cooked before consumption.
The bacteria of salmonella is found in digestive systems of chickens and passed onto humans who eat chicken meat which is infected.
An estimated 8,000-10,000 cases are recorded every year in England and Wales.
There are more than 2,000 types of the bug many of which cause food poisoning in humans and even deaths in young children, elderly people and those with weaker immune systems.
Dr Lesley Larkin, of UK Health Security Agency (UKHSA), said cases have come from "different parts of the UK".
She said: "We are working with colleagues of other affected countries alongside ECDC to identify the source of the outbreak."
The NHS says there are six symptoms of food poisoning which include
- feeling sick (nausea)
- diarrhoea
- vomiting
- stomach cramp
- a high temperature of 38C or above
- feeling generally unwell or tired, aches and chills
Within a few days after eating the food that caused the infection these symptoms can emerge but can emerge after a few hours or not for a few weeks.
The Mirror reported last month how a coupl slammed a TUI holiday as 'the worst' they have ever been on after being struck down with a bug that ruined their relaxing break.
Anthony and Lesley Hoban set off on a 10-day trip to Cape Verde's Riu Funana hotel, Cape Verde in September.
But just days into their holiday they claim to have suffered from gastric problems which included stomach pains, sickness and diarrhoea.
Their "luxury" trip to Cape Verde, off the coast of west Africa they claim turned out to be "the worst holiday [they] have ever been on"
The couple were among hundreds of holidaymakers who fell ill on visit to the islands in summer.
They and more than 530 British holidaymakers instructed lawyers to investigate illnesses during their holiday.
Anthony, 66, and his wife Lesley, 61, reported what looked like undercooked food that they believed was being recycled for other meals.
He said: "The flies seemed to be everywhere, with no real attempt to do anything about it and after a few days, we started to notice the food becoming a bit too repetitive and what had been out for lunch appeared to have been just recycled for dinner.
