Infection Control Exam Questions and Verified Answers/Accurate Solutions| New Update
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Components of the Infection Cycle Infectious agent: bacteria, viruses, fungi
Reservoir: natural habitat of the organism
Portal of exit: point of escape for the organism
Means of transmission: direct contact, indirect contact, airborne route
Portal of entry: point at which organisms enter a new host
Susceptible host: must overcome resistance mounted by host's defenses
Which of the following is the most significant and commonly found infection-causing agent in
health care institutions?
A. Bacteria
B. Fungi
C. Viruses
D. Mold A. Bacteria
Infectious agents Bacteria: most significant and most prevalent in hospital settings
Virus: smallest of all microorganisms
Fungi: plant-like organisms present in air, soil, and water
Classification of Bacteria Spherical (cocci), rod shaped (bacilli), corkscrew shaped
(spirochetes)
Gram positive or gram negative—based on reaction to Gram stain
Aerobic or anaerobic—based on need for oxygen
Factors Affecting an Organism's
Potential to Produce Disease Number of organisms
Virulence
, Competence of person's immune system
Length and intimacy of contact between person and microorganism
Possible Reservoirs for Microorganisms Other people
Animals
Soil
Food, water, milk
Inanimate objects
Which infection or disease may be spread by touching a contaminated inanimate article?
A. Rabies
B. Giardia
C. E. coli
D. Influenza D. Influenza
Stages of Infection Incubation period: organisms growing and multiplying
Prodromal stage: person is most infectious, vague and nonspecific signs of disease
Full stage of illness: presence of specific signs and symptoms of disease
Convalescent period: recovery from the infection
Common portals of exit Respiratory
Gastrointestinal
Genitourinary tracts
Breaks in skin
Blood and tissue
Factors Affecting Host Susceptibility Intact skin and mucous membranes
Already Graded A+
Components of the Infection Cycle Infectious agent: bacteria, viruses, fungi
Reservoir: natural habitat of the organism
Portal of exit: point of escape for the organism
Means of transmission: direct contact, indirect contact, airborne route
Portal of entry: point at which organisms enter a new host
Susceptible host: must overcome resistance mounted by host's defenses
Which of the following is the most significant and commonly found infection-causing agent in
health care institutions?
A. Bacteria
B. Fungi
C. Viruses
D. Mold A. Bacteria
Infectious agents Bacteria: most significant and most prevalent in hospital settings
Virus: smallest of all microorganisms
Fungi: plant-like organisms present in air, soil, and water
Classification of Bacteria Spherical (cocci), rod shaped (bacilli), corkscrew shaped
(spirochetes)
Gram positive or gram negative—based on reaction to Gram stain
Aerobic or anaerobic—based on need for oxygen
Factors Affecting an Organism's
Potential to Produce Disease Number of organisms
Virulence
, Competence of person's immune system
Length and intimacy of contact between person and microorganism
Possible Reservoirs for Microorganisms Other people
Animals
Soil
Food, water, milk
Inanimate objects
Which infection or disease may be spread by touching a contaminated inanimate article?
A. Rabies
B. Giardia
C. E. coli
D. Influenza D. Influenza
Stages of Infection Incubation period: organisms growing and multiplying
Prodromal stage: person is most infectious, vague and nonspecific signs of disease
Full stage of illness: presence of specific signs and symptoms of disease
Convalescent period: recovery from the infection
Common portals of exit Respiratory
Gastrointestinal
Genitourinary tracts
Breaks in skin
Blood and tissue
Factors Affecting Host Susceptibility Intact skin and mucous membranes
