Over 63 people in Britain, mostly young children, have become infected with salmonella in an outbreak linked to Kinder Surprise eggs.
Chocolate firm Ferrero is recalling some batches of the eggs as a precaution while investigations continue into the link, the Food Standards Agency, FSA, said.
More cases had been reportedly recorded in Europe, including Ireland, France, Germany, Sweden and the Netherlands.
The eggs were made in Belgium.
No deaths had been reported in Britain but most cases involved children aged 5 and below.
In an alert, the FSA said the recall was due to a potential link to a salmonella outbreak.
The products affected were the 20g eggs or the three-pack of eggs, all with a best-before July 11, and Oct. 7.
Ferrero had recalled the products and people were being advised not to eat them.
The FSA said the eggs had all been manufactured at the same factory, and other Ferrero products were not thought to be affected.
Investigations so far had been led by the UK Health Security Agency, UKHSA, Public Health Scotland, Public Health Wales and Public Health Agency Northern Ireland.
Symptoms of salmonella included diarrhoea, stomach cramps, nausea, vomiting and fever.
While most cases resolved in a few days, symptoms could be severe and lead to hospital admission, especially in the very young and those with weakened immune systems.