Principles of Disease and Epidemiology Flashcards
(39 cards)
attachment to and replication in/on host
colonization
colonization of the body leading to damage
infection
any deviation from health
disease
a situation in which 2 populations of organisms interact in a close and sustained association
symbiosis
2 populations live together and accomplish what neither could alone
synergism
benefits both organisms
mutualism
one population benefits, the other neither benefits nor is harmed
commensalism
the relationship is beneficial to one organism, harmful to the other
parasitism
microorganisms that colonize without causing disease
normal microbiota
the ability to enter host tissues and cause disease
pathogenicity
the degree of pathogenicity of a parasite
virulence
microorganisms that colonize the host but may or may not cause disease depending on other factors
opportunistic
site at which parasite enters host
portal of entry
the number of organisms that must be taken into the body to establish disease
dose
factors that allow the colonization of a host
adhesins
factors that allow penetration of and spread within tissues or cells
invasins
factors that allow microbes to evade defenses
evasins
time from parasite entry to appearance of symptoms
incubation period
period of general symptoms
prodromal period
acute stage where specific symptoms appear
period of acme
period of gradual decrease in symptoms
period of decline
time where body’s systems return to normal
period of convalescence
disease where symptoms are apparent
clinical disease
disease where there are few obvious symptoms
subclinical disease
