Hello Princesita83
To protect yourself from a Listeria infection, you should avoid blue cheese, feta, and all soft and semi-hard cheeses made from raw or pasteurized milk during pregnancy.
Hard and extra-hard cheeses, whether made from raw or pasteurized milk, can be eaten without concern, but the rind should be removed before consumption. Mozzarella and cream cheese made from pasteurized milk, as well as processed cheese (such as the Appenzeller Scheibletten you mentioned), are also safe. The same applies to fondue and other melted or heated cheeses (raclette, cheese used for gratinating, etc.)
Best regards, your M-Infoline Team