Müller, which produces the desserts under licence from Cadbury, has also put notices in UK outlets where the affected products are sold and has advised people not to eat the items and return them.
Listeria bacteria, which can be found in chilled foods, can cause the rare infection listeriosis. But for most people, the infection is not serious, the UK National Health Authority (NHS) said.
The alert, issued by the Foods Standards Agency (FSA), relates to the following desserts:
- Cadbury Daim Chocolate Dessert
- Cadbury Crunchie Chocolate Dessert
- Cadbury Flake Chocolate Dessert
- Cadbury Dairy Milk Buttons Chocolate Dessert
- Cadbury Dairy Milk Chunks Chocolate Dessert
- Cadbury Heroes Chocolate Dessert
The use-by dates of concern include 17 May for the Flake and Crunchie desserts and 18 May for the other four. Müller, which is owned by Mondelez International, said all impacted products could be returned for a full refund.
ConfectioneryNews understands that no other batches of Müller or Cadbury products have been affected.
According to the NHS, for some consumers, the symptoms may include a high temperature, aches and pains, chills, feeling or being sick, and diarrhoea. In most people, listeriosis has no symptoms or causes or mild symptoms for a few days, it advised. However, those at a higher risk of serious infection include those who are pregnant, over the age of 65, newborn babies and people with weakened immune systems.
Müller claimed it was an isolated incident and an investigation is being carried out. The yoghurt manufacturer said in a statement: "Müller produces these products under licence from Mondelez International and has stressed that this does not impact any other products it produces in the UK or other markets."