The immune system is a complex network of cells, tissues and organs that work together to protect the body from harmful microorganisms, such as bacteria, viruses, parasites and fungi, that can lead to ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

A strong immune system is crucial for a child’s overall health, helping them fight off infections and stay active. While it’s normal for kids to catch colds or minor illnesses, frequent or prolonged ...