PATHOLOGY

Detailed explanation-1: -An infection occurs when germs enter the body, increase in number, and cause a reaction of the body. Three things are necessary for an infection to occur: Source: Places where infectious agents (germs) live (e.g., sinks, surfaces, human skin) Susceptible Person with a way for germs to enter the body.

Detailed explanation-2: -Pathogens cause illness to their hosts through a variety of ways. The most obvious means is through direct damage of tissues or cells during replication, generally through the production of toxins, which allows the pathogen to reach new tissues or exit the cells inside which it replicated.

Detailed explanation-3: -Infectious diseases are often caused by pathogenic microbes. You get an infection when a pathogen enters your body and begins to multiply. Disease occurs when the cells in your body are damaged as a result of the infection and signs and symptoms of an illness appear.