reason of low immune system

What is the cause of a low immune system?

Your child’s immune system is what defends his or her body from harmful bacteria, viruses, and other pathogens. Germs like bacteria, viruses, and fungi, as well as poisons, fall under this category (chemicals made by microbes). Organs, cells, and proteins all work together to form the immune system. Your immune system protects your body from …

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