- Listeriosis is caused by a type of bacteria called Listeria monocytogenes (listeria) and is mainly spread through contaminated food.
- Listeria is widespread throughout the environment and can be found in soil, wood, decaying vegetation and water.
- Unlike most other types of bacteria, listeria can survive and often multiply in temperatures below 5ºC (41ºF). Therefore, listeria can still grow to potentially harmful levels in food stored in a fridge.
- Listeria cannot multiply in temperatures below 0ºC (32ºF), but freezing food doesn't necessarily kill all listeria bacteria.
- Listeria can be removed by cooking food thoroughly or, in the case of dairy products, pasteurising it (a heat treatment designed to kill bacteria).
More top news
More than 90,000 police, soldiers and private security agents will be deployed across to ensure safety for the Euro 2016 soccer tournament.
The UK has gained £2.1 billion more from the EU each year than it has contributed in the last five years.
Netflix and online streaming services could be forced to make sure 20% of their content is European under new plans from Brussels.