WebMD
Font Size

Pathogen

A pathogen is a living organism that causes disease. Pathogens include bacteria, viruses, fungi, and protozoa.

ByHealthwise Staff
Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine
Specialist Medical ReviewerChristine Hahn, MD - Epidemiology
Last RevisedApril 16, 2013

WebMD Medical Reference from Healthwise

Last Updated: April 16, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.