Many microorganisms naturally live on the surface of your skin and hair, and inside your mouth and nostrils including: Staphylococci. Another place where an enormous variety of microorganisms thrive is in your large intestine. These are generically termed Coliforms and include, for example, Escherichia coli. These areas are technically "outside your body" as far as your immune system is concerned - so their presence there does not trigger an immune response.
Explain How Humans Can Harbor Many Microorganisms On And Find Their Bodies Without Experiencing Symptoms Of Infection?
Microorganisms are organisms which are microscopic in nature and are too small to be seen by the naked eye. Microorganisms include bacteria, fungi, archaea or protists etc. And not every microorganism is dangerous or harmful. And even if it is harmful and present on human body, the natural defense mechanism of the human body fight them off. So they don't cause any infection.