A national outbreak of Salmonella that has affected 156 people is being investigated, Public Health England said.
The cases in England "occurred in isolated clusters over several months" and have been managed locally, according to the health watchdog.
However, the cases of Salmonella "are now being reassessed as potentially linked under a national investigation," it added.
More top news
Sam Hemming was just moments from death as doctors prepared to switch off her life support, but she was saved when her toe twitched.
The 25-year-old was rushed to Queen Elizabeth University Hospital after being stretchered from the ring during a British title eliminator.
A soaking then sunshine this weekend