Flashcards in PID Overview Lecture Deck (46)
The study of defense against disease
Infectious diseases are caused by?
The study of how microorganisms spread?
Zoonotic diseases focus on?
food animal infections
Contains no symptoms?
These "_______________" are everywhere!
-Next to you
Part of life and the whole ecosystem
(We cannot live without them)
Type of micro-org. that lives in hot water springs, antarctic cold, and the deep sea?
No importance for animals and disease, still part of the ecosystem?
Free living bacteria
Micro organisms that NEED a host to survive
Species that live together by choice.
Cause no harm in "normal" conditons?
Can cause disease if conditons are stressful but in normal environment it causes no harm (Skin flora)
An infection caused by an infectious agent that is already present in the body, but has previously been inapparent or dormant.
Disease can occur when microbes included in normal bacteria flora enter a sterile area of the body such as the brain or muscle.
are those bacteria that must cause disease in order to be transmitted from one host to another. These bacteria must also infect a host in order to survive, in contrast to other bacteria that are capable of survival outside of a host.
-pathogen does not want to kill its host before the pathogen can replicate and spread to new host
-evolve to reduce virulence
(generally don't need treatment)
-normal conditions of the pathogen have changed in some way and establishes in an un-natural host (man instead of animal), pathogen does want to kill/harm its host while the pathogen can replicate. Causes high damage/death
Invasion and multiplication of micro organism, eventually with disease (but does not always mean disease)
Causes structural and functional damage of the organism
disease that has no recognizable clinical findings, "Don't really feel well but not truly sick"
a disease that will most often make you sick given the "opportunity" of a damaged or weakened immune system. Need precondition before disease actually shows
is the presence of disease-causing bacteria in the blood
is the presence of bacteria in the blood.
brief and severe disease where it's too late when you actually can see issues with the animals, the farmer may walk out to see sick and dead animals (pneumonia)
conditions are severe and sudden in onset. This could describe anything from a broken bone to an asthma attack. "the animal doesn't feel well one day, next day they REALLY DON'T feel well) Animal got sick all of a sudden
A vaguely defined state that is clearly not acute, but rather between acute and chronic. A long term condition that happens over time.
disease lasting 3 months or more, by the definition of the U.S. National Center for Health Statistics. Generally cannot be prevented by vaccines or cured by medication, nor do they just disappear. "Hard to cure, hide in white blood cells"
You cannot treat toxins with these?
Minority of micro-organisms cause_______?