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
Teenage blogger Amos Yee from Singapore was jailed for posting criticisms of his government online.
Supermarket chain decide to unlock trolleys at some of its biggest stores as it deals with the implications of the new £1 coin rollout.
Florida police have charged a man who decided to eat his pancakes in the middle of the street with "placing an obstruction in the road".