a small living organism that is not visible to the naked eye
microorganisms that are part of the normal flora of the body and are beneficial in maintaining certain body processes
microorganisms that cause infection and disease (germs)
simple one-celled organisms that multiply rapidly
one-celled animal like organisms often found in decayed materials and contaminater water
parasitic microorganisms which means they cannot live outside cells of another living organism
these are the smallest microorganisms visible only using an electron microscope
(serum hepatitis) a diesease cause by the HBV virus and is transmitted by blood, serum and other body secretions
a disease caused by the HCV virus and is transmitted by blood and blood containing body fluids
is caused by the human immunodeficiency virus which surpresses the immune system
depending on free oxygen or air
living or active in the absence of free oxygen
the infection or disease originates within the body
the infection or disease originates outside the body
an infection acquired in a health care facility
infections that occur when the defenses are weak
The pathogen responsible for causing an infection; also called the infectious agent.
where a causative agent must live
objects contaminated with infectious material that contains pathogens
portal of exit
a way to escape from the reservoir in which it has been growing
mode of transmission
way that the causative agent can be transmitted to another reservoir or host where it can live
portal of entry
a pathway by which the caustive agent enters the host
a person likely to get an infection or disease
chain of infection
Infectious agent, reservoir, portal of exit, means of transmission, portal of entry and susceptible host.
the absence of diesease-producing microorganims
the things that prevent or inhibit growth of pathogenic organisms but are not effective against spores and viruses
group of simple, plantlike animals that live on dead organic matter
the process that destroys or kills pathogenic organisms
the process that destroys all microorganisms both pathogenic and non-pathogenic
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