pathogen

IPA: pˈæθʌdʒʌn

(pathology, immunology) Any organism or substance, especially a microorganism, capable of causing disease, such as bacteria, viruses, protozoa or fungi. Microorganisms are not considered to be pathogenic until they have reached a population size that is large enough to cause disease.

Examples of "pathogen" in Sentences

The doctor identified the pathogen causing the patient's illness as a strain of E. coli
Pathogens can spread through contaminated water, food, or direct contact with an infected person
Our immune system works hard to detect and eliminate pathogenic bacteria and viruses from our bodies
Researchers are constantly studying new ways to combat emerging pathogens and prevent widespread outbreaks
It's important to practice good hygiene to reduce the risk of transmitting pathogens to others