What is considered a pathogen?

Answer 1

Any organism that causes a disease to it's host is considered to be a pathogen. A pathogen can be a bacteria, virus or a fungus.

For example

Bacterium -Strep Throat and Meningitis

Virus - Hepatitis A, Hepatitis B, Hepatitis C

Fungus - Athelete's Foot

Answer 2

The two are quite separate. It is like defining chalk in terms of cheese. An antigen is (effectively) a molecular structure to which an immunoglobulin antibody (and perhaps a T-cell receptor) can be raised under suitably stimulatory conditions. A pathogen should be defined as ANY agent that causes disease (radiation, asbestos, trauma, heat, chemicals or organisms). The mass action of common usage has resulted in a tendency for pathogen to be regarded as a synonym for a pathogenic organism. The very "statement" <pathogenic organism> tells us that pathogen alone does not imply a pathogenic organism. This misappropriateion of pathogen allows a question like the one posed here to be raised. This is probably because it is believed that all organisms induce (aggressive) antibodies.

Answer 3

A pathogen is an organism which when act or enter in your body can cause certain kind of disease and make you ill. They are generally microorganisms like bacteria, fungi, viruses, protozoan etc.

Basically, a pathogen is a disease causing agent also called virulent ..

Answer 4

A pathogen is usually defined as a microorganism that causes, or can cause, disease. We have defined a pathogen as a microbe that can cause damage in a host.

Answer 5

The origin and development of a disease. More specifically, it's the way a microbe (bacteria, virus, etc.) causes disease in its host.

Answer 6

Pathogenic bacteria are bacteria that cause human illness. Of all species of bacteria in the world, only a small percentage actually cause human disease.

Answer 7

It causes either a disease or a disorder.