Microorganisms
Microbe
Pathogen
Opportunistic pathogen
Normal flora / microbiota
Host
Portal of entry
Adherence
Colonization
Infection
Disease
Pathogensitiy
Infectivity
Virulence / virulence factors
Invasion
Toxin production
Immune invasion
Tropism
Perstistence
Chronic vs acute infection
Innate immunity
Adaptive immunity
Immunocompromised host
Inflammation