What is the difference between pathogens and non pathogen?

Answer 1

The non-pathogenic micro-organisms are considered to be normal flora. These grow in places like the throat and nose. They are 'expected' organisms and are not life threatening to most individuals.

Pathogenic micro-organisms are abnormal flora. In the above mentioned example, a throat culture that grows strep would be pathogenic and the doctor might therefore diagnose strep throat. It does not usually grow in that place.

Not all pathogenic organisms lead to life threatening conditions; however if a person's immune system is compromised even normal flora can be difficult to overcome.

Pathogenic means it is causative for a disease and non-pathogenic means it is harmless....eg: influenza is pathogenic.

Answer 2

pathogenenic microorganisms cause disease. Non-pathogenenic, not.