Flashcards in Pathogens Deck (11)
Differentiate a pathogen from a commensal
Pathogen - a disease-causing organism
Commensal - an organism that's part of the normal flora of the body
What is meant by the pathogenicity of a pathogen?
It's capacity to cause infection
What two factors dictate pathogenicity?
What two factors dictate infectivity?
What is infectivity?
Ability of a pathogen to become established
What is virulence?
Ability of a pathogen to cause harm once established
What three factors dictate virulence?
Name the three classes of pathogenic toxin
What is an exotoxin?
Released extracellulary (e.g. tetanus)
What is an enterotoxin?
An endotoxin that acts on the GI tract (e.g. cholera)