Most foods are completely harmless during pregnancy and it's important to maintain a balanced healthy pregnancy diet with sensible amounts of the various nutritional categories. However there are worries at present about listeria infection that can be caught from unpasteurised and raw foods. These include unpasteurised milk, soft cheeses, pre-prepared salads (for example, from salad bars), unwashed raw vegetables, pate, cold diced chicken and pre-cut fruit and fruit salad. To prevent listeriosis avoid these high risk foods and thoroughly cook raw food from animal sources, such as beef, lamb, pork, or poultry, keep and prepare raw meat separate from vegetables, cooked foods, and ready- to-eat food and wash raw vegetables and fruit thoroughly before eating.