Frequently asked question: What is an immune system?

Everyone's body has an immune system. Your immune system protects you from harmful pathogens, such as bacteria, viruses, fungi, parasites and malignant cells (cancer cells). Your skin and your mucous membranes also provide protection, by preventing pathogens or harmful substances from getting through. However, if your skin is damaged, for example if you have a cut or a wound, this entrance can happen. The bacteria or viruses that enter your body are made harmless by your immune system. A well-functioning immune system ensures good immunity.

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