INFECTION CONTROL MICROBIOLOGY
(MCQS) WITH WELL DETAILED
RATIONALES –(FREQUENTLY ASKED IN
EXAMS)
Peterson njiraini
BY:OMNIVERSEHUB
0
,Global Nursing Infection Control / Microbiology – MCQs with Detailed
Rationales
1. What is the most effective method to prevent the spread of infections in
healthcare settings?
A. Hand hygiene
B. Hair brushing
C. Bed rest
D. Oral hydration
Answer & Explanation: Hand hygiene – Regular hand washing or sanitizing
is the primary method to prevent transmission of pathogens.
2. Which type of isolation is required for a patient with tuberculosis?
A. Airborne isolation
B. Contact isolation
C. Droplet isolation
D. Standard precautions only
Answer & Explanation: Airborne isolation – TB bacteria are transmitted via
tiny droplets that remain suspended in the air.
3. Which vaccine is recommended annually for healthcare workers?
A. Influenza vaccine
B. Measles vaccine
1
, C. Polio vaccine
D. Tetanus only
Answer & Explanation: Influenza vaccine – Annual vaccination reduces risk
of influenza outbreaks in healthcare settings.
4. What is the correct sequence for handwashing?
A. Wet, soap, rub, rinse, dry
B. Rinse, soap, rub, wet, dry
C. Soap, rinse, wet, dry, rub
D. Wet, rinse, soap, rub, dry
Answer & Explanation: Wet hands, apply soap, rub thoroughly, rinse, and
dry – Ensures removal of pathogens effectively.
5. Which pathogen is commonly associated with hospital-acquired
infections?
A. Staphylococcus aureus
B. Influenza virus
C. Poliovirus
D. Hepatitis A virus
Answer & Explanation: Staphylococcus aureus – MRSA strains are a major
cause of nosocomial infections.
2
(MCQS) WITH WELL DETAILED
RATIONALES –(FREQUENTLY ASKED IN
EXAMS)
Peterson njiraini
BY:OMNIVERSEHUB
0
,Global Nursing Infection Control / Microbiology – MCQs with Detailed
Rationales
1. What is the most effective method to prevent the spread of infections in
healthcare settings?
A. Hand hygiene
B. Hair brushing
C. Bed rest
D. Oral hydration
Answer & Explanation: Hand hygiene – Regular hand washing or sanitizing
is the primary method to prevent transmission of pathogens.
2. Which type of isolation is required for a patient with tuberculosis?
A. Airborne isolation
B. Contact isolation
C. Droplet isolation
D. Standard precautions only
Answer & Explanation: Airborne isolation – TB bacteria are transmitted via
tiny droplets that remain suspended in the air.
3. Which vaccine is recommended annually for healthcare workers?
A. Influenza vaccine
B. Measles vaccine
1
, C. Polio vaccine
D. Tetanus only
Answer & Explanation: Influenza vaccine – Annual vaccination reduces risk
of influenza outbreaks in healthcare settings.
4. What is the correct sequence for handwashing?
A. Wet, soap, rub, rinse, dry
B. Rinse, soap, rub, wet, dry
C. Soap, rinse, wet, dry, rub
D. Wet, rinse, soap, rub, dry
Answer & Explanation: Wet hands, apply soap, rub thoroughly, rinse, and
dry – Ensures removal of pathogens effectively.
5. Which pathogen is commonly associated with hospital-acquired
infections?
A. Staphylococcus aureus
B. Influenza virus
C. Poliovirus
D. Hepatitis A virus
Answer & Explanation: Staphylococcus aureus – MRSA strains are a major
cause of nosocomial infections.
2
