Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
infectious disease process in an animal
|
entry, replication, spread from entry site, evasion of host defenses, damage to cells, tissues and organs, exit
|
|
persistent infection
|
when clinical disease may not be apparent, but the animal still sheds pathogen, exposing others
|
|
Damage to cells tissues and organs
|
may be caused by pathogen itself or by animal's own defense mechanism
|
|
colonization
|
presence of an infectious agent in or on an individual
|
|
infection
|
presence of an infectious again with damage to host cells, tissues, or organs. may or may not have clinical symptoms
|
|
infectious disease
|
a clinical state in which infection results in detectable physiologic abnormalities
|
|
syndrome
|
set of clnical signs which occur together, the sum of clinical signs in a disease state
|
|
parasite
|
organism living in permanent association with and at the expense of its host
|
|
host
|
animal carrying a parasite
|
|
saprophyte
|
organism that usually inhabit the inanimate environment (e.g. soil)
|
|
commensal
|
parasite that causes no discernible harm to its host
|
|
pathogen
|
any infectious agent that can induce pathology (or disease); may be a parastie or a saprophyte
|
|
pathogenicity
|
refers to the capacity of an infectious agent to induce pathology
|
|
virulence
|
refers to the severity of disease induced by a pathogen, and is often used as a synonym for pathogenicity
|
|
virulent
|
marked by a rapid, sever, and destructive course; able to overcome bodily defensive mechanisms: markedly pathogenic
|
|
avirulent
|
not virulent, not pathogenic
|
|
attenuate
|
reduced in virulence, less virulent
|
|
extracellular parasite, extracellular pathogen
|
infectious agent that replicates outside host cells
|
|
intracellular parasite, intracellular pathogen
|
infectious agen that replicates inside host cells
|
|
obligate intracellular parasite
|
can only replicate inside host cells
|
|
facultative intracellular parasite
|
may replicate inside or outside host cell
|
|
Outcomes of infection
|
disease
no disease |
|
Outcomes of infection causing disease
|
recovery
persistent infection death |
|
Viruses
|
obligate intracellular
|
|
bacteria
|
extracellular
facultative intracellular obligate intracellular |
|
fungi
|
extracellular
facultative intracellular |