PATHOLOGY

Detailed explanation-1: -Anaerobic infections are usually endogenous indicating that they originate from the host’s own flora.

Detailed explanation-2: -There are three basic patterns of infection in the ICU: primary endogenous, secondary endogenous, and exogenous. In exogenous infection, no microbial carriage precedes colonization and infection. In endogenous infection, infection is preceded by oropharyngeal or GI carriage.

Detailed explanation-3: -Bacteria that are part of normal internal ecosystems, also known as bacterial flora, are called Endogenous Bacteria. A significant amount of prominent diseases are induced by exogenous bacteria such as gonorrhea, meningitis, tetanus, and syphilis.