In the field of infectious diseases, two of the most dreaded types of infection are disseminated infections and opportunistic infections. Without these two forms of infections, most diseases would easily be resolved. Co-infection is another complication, but we’ll discuss that at another date.
Before any individual can be infected, there must be a point of entry. For us humans, most of our sense organs are point of entry for microorganisms, and they also double as initiation point for infection most times. Hence, we have the following entry points for infective microorganisms: mouth, ear, nose, eyes, skin and sex organs (genitalia).