5 doctors weighed in:
What is opportunistic pathogen? Are they bacteria, viruses, or what?
5 doctors weighed in

Dr. John Leander Po
Internal Medicine - Infectious Disease
4 doctors agree
In brief: OK Microbes ...
A person with a healthy immune system will have certain bacteria, fungi, viruses, etc that colonize the body without causing disease.
However, given the "opportunity" (i.e. Immunodeficiency, barrier compromise), these same microbes can cause disease. For example, staph bacteria found on human skin doesn't cause problems unless a skin cut allows the bacteria to get in and cause an infection.

In brief: OK Microbes ...
A person with a healthy immune system will have certain bacteria, fungi, viruses, etc that colonize the body without causing disease.
However, given the "opportunity" (i.e. Immunodeficiency, barrier compromise), these same microbes can cause disease. For example, staph bacteria found on human skin doesn't cause problems unless a skin cut allows the bacteria to get in and cause an infection.
Dr. John Leander Po
Dr. John Leander Po
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