What is a endogenous infection?

Endogenous infections (also called autogenous or endogenous superinfections) are caused by microorganisms that are already present in the host's body. They are distinct from exogenous infections, which are caused by microorganisms that enter the body from outside.

Examples of endogenous infections include:

* *Urinary tract infections that are caused by bacteria such as *Escherichia coli,* which is normally present in the gastrointestinal tract.

* *Skin and soft tissue infections* that are caused by bacteria that normally live on the skin (e.g., Staphylococcus aureus).

* *Opportunistic infections* that occur in people with weakened immune systems. These infections are typically caused by microorganisms that are part of the normal flora of the body, such as *Candida albicans* or *Aspergillus fumigatus*.

Endogenous infections can be dangerous, especially in people with weakened immune systems or underlying medical conditions. It is important to diagnose and treat endogenous infections early in order to prevent serious complications.