NYS(WRITTEN) INFECTION CONTROL EXAM |
COMPLETE QUESTIONS WITH 100% RATED EXPERT
SOLUTIONS |2026 LATEST UPDATED
SECTION I: BASIC PRINCIPLES OF INFECTION CONTROL
1. The single most important and basic procedure for preventing the
transmission of infection is:
• A) Wearing gloves
• B) Wearing masks
• C) Hand hygiene
• D) Wearing gowns
Rationale: Hand hygiene is the single most important and basic procedure for
preventing the transmission of infection. It is the cornerstone of infection
prevention. Gloves, masks, and gowns (A, B, D) are additional barriers but do
not replace hand hygiene, which must be performed before and after every
patient contact.
2. Normal flora is defined as:
• A) Microorganisms that colonize the body without causing disease
• B) Microorganisms that always cause disease
• C) Microorganisms that are only found in hospitals
• D) Microorganisms that are killed by antibiotics
Rationale: Normal flora are microorganisms that colonize the body without
causing disease under normal conditions. They provide benefits like competitive
,inhibition of pathogens and vitamin synthesis. They are not necessarily killed by
antibiotics (D) and are found everywhere, not just hospitals (C).
3. A patient with a weakened immune system is at increased risk for infection
caused by normal flora. This type of infection is called:
• A) Exogenous infection
• B) Opportunistic infection
• C) Cross-infection
• D) Iatrogenic infection
Rationale: Opportunistic infections occur when normal flora take advantage of a
weakened immune system to cause disease. Exogenous infections (A) come from
outside sources. Cross-infections (C) are transmitted between patients.
Iatrogenic infections (D) result from medical procedures.
4. An infection that is acquired in a healthcare facility is called:
• A) Community-acquired infection
• B) Healthcare-associated infection (HAI)
• C) Exogenous infection
• D) Endogenous infection
Rationale: Healthcare-associated infections (HAIs) are acquired in healthcare
facilities. Community-acquired infections (A) are contracted outside healthcare
settings. Exogenous (C) and endogenous (D) refer to the source of the infection,
not where it was acquired.
5. The most common type of healthcare-associated infection is:
• A) Pneumonia
, • B) Urinary tract infection (UTI)
• C) Surgical site infection
• D) Bloodstream infection
Rationale: Urinary tract infections (UTIs) are the most common HAIs, often
associated with indwelling urinary catheters. While pneumonia, surgical site
infections, and bloodstream infections (A, C, D) are also common, UTIs remain
the most frequently reported.
6. The chain of infection includes all of the following links EXCEPT:
• A) Infectious agent
• B) Reservoir
• C) Portal of entry
• D) Antibiotic resistance
Rationale: The chain of infection consists of six links: Infectious agent, Reservoir,
Portal of exit, Mode of transmission, Portal of entry, and Susceptible host.
Antibiotic resistance (D) is a concern but is not a link in the chain of infection.
Breaking any link prevents infection transmission.
7. An example of a portal of exit is:
• A) Mucous membranes
• B) The skin
• C) Respiratory tract secretions
• D) An intact immune system
Rationale: The portal of exit is the route by which the infectious agent leaves the
reservoir. Respiratory tract secretions (coughing, sneezing) are a common portal
, of exit. Mucous membranes and skin (A, B) are portals of entry, not exit. An
intact immune system (D) is a host defense.
8. Which of the following is NOT a reservoir for infection?
• A) Humans
• B) Animals
• C) Environmental surfaces
• D) Sterile water
Rationale: Reservoirs are places where infectious agents live, grow, and
multiply. Humans, animals, and environmental surfaces (A, B, C) can all serve as
reservoirs. Sterile water (D) is not a reservoir because it contains no
microorganisms. Sterile water is used to prevent infection.
9. The most important defense mechanism in preventing infection in healthcare
settings is:
• A) Use of antimicrobial soaps
• B) Hand hygiene
• C) Use of PPE
• D) Environmental cleaning
Rationale: Hand hygiene is the most important defense mechanism against
infection transmission in healthcare settings. While antimicrobial soaps (A), PPE
(C), and environmental cleaning (D) are all important, hand hygiene remains the
single most effective measure.
10. The minimum time recommended for handwashing with soap and water is:
• A) 5–10 seconds
COMPLETE QUESTIONS WITH 100% RATED EXPERT
SOLUTIONS |2026 LATEST UPDATED
SECTION I: BASIC PRINCIPLES OF INFECTION CONTROL
1. The single most important and basic procedure for preventing the
transmission of infection is:
• A) Wearing gloves
• B) Wearing masks
• C) Hand hygiene
• D) Wearing gowns
Rationale: Hand hygiene is the single most important and basic procedure for
preventing the transmission of infection. It is the cornerstone of infection
prevention. Gloves, masks, and gowns (A, B, D) are additional barriers but do
not replace hand hygiene, which must be performed before and after every
patient contact.
2. Normal flora is defined as:
• A) Microorganisms that colonize the body without causing disease
• B) Microorganisms that always cause disease
• C) Microorganisms that are only found in hospitals
• D) Microorganisms that are killed by antibiotics
Rationale: Normal flora are microorganisms that colonize the body without
causing disease under normal conditions. They provide benefits like competitive
,inhibition of pathogens and vitamin synthesis. They are not necessarily killed by
antibiotics (D) and are found everywhere, not just hospitals (C).
3. A patient with a weakened immune system is at increased risk for infection
caused by normal flora. This type of infection is called:
• A) Exogenous infection
• B) Opportunistic infection
• C) Cross-infection
• D) Iatrogenic infection
Rationale: Opportunistic infections occur when normal flora take advantage of a
weakened immune system to cause disease. Exogenous infections (A) come from
outside sources. Cross-infections (C) are transmitted between patients.
Iatrogenic infections (D) result from medical procedures.
4. An infection that is acquired in a healthcare facility is called:
• A) Community-acquired infection
• B) Healthcare-associated infection (HAI)
• C) Exogenous infection
• D) Endogenous infection
Rationale: Healthcare-associated infections (HAIs) are acquired in healthcare
facilities. Community-acquired infections (A) are contracted outside healthcare
settings. Exogenous (C) and endogenous (D) refer to the source of the infection,
not where it was acquired.
5. The most common type of healthcare-associated infection is:
• A) Pneumonia
, • B) Urinary tract infection (UTI)
• C) Surgical site infection
• D) Bloodstream infection
Rationale: Urinary tract infections (UTIs) are the most common HAIs, often
associated with indwelling urinary catheters. While pneumonia, surgical site
infections, and bloodstream infections (A, C, D) are also common, UTIs remain
the most frequently reported.
6. The chain of infection includes all of the following links EXCEPT:
• A) Infectious agent
• B) Reservoir
• C) Portal of entry
• D) Antibiotic resistance
Rationale: The chain of infection consists of six links: Infectious agent, Reservoir,
Portal of exit, Mode of transmission, Portal of entry, and Susceptible host.
Antibiotic resistance (D) is a concern but is not a link in the chain of infection.
Breaking any link prevents infection transmission.
7. An example of a portal of exit is:
• A) Mucous membranes
• B) The skin
• C) Respiratory tract secretions
• D) An intact immune system
Rationale: The portal of exit is the route by which the infectious agent leaves the
reservoir. Respiratory tract secretions (coughing, sneezing) are a common portal
, of exit. Mucous membranes and skin (A, B) are portals of entry, not exit. An
intact immune system (D) is a host defense.
8. Which of the following is NOT a reservoir for infection?
• A) Humans
• B) Animals
• C) Environmental surfaces
• D) Sterile water
Rationale: Reservoirs are places where infectious agents live, grow, and
multiply. Humans, animals, and environmental surfaces (A, B, C) can all serve as
reservoirs. Sterile water (D) is not a reservoir because it contains no
microorganisms. Sterile water is used to prevent infection.
9. The most important defense mechanism in preventing infection in healthcare
settings is:
• A) Use of antimicrobial soaps
• B) Hand hygiene
• C) Use of PPE
• D) Environmental cleaning
Rationale: Hand hygiene is the most important defense mechanism against
infection transmission in healthcare settings. While antimicrobial soaps (A), PPE
(C), and environmental cleaning (D) are all important, hand hygiene remains the
single most effective measure.
10. The minimum time recommended for handwashing with soap and water is:
• A) 5–10 seconds
