CNT WRITTEN EXAM 2026/2027 TEST BANK
WITH 530 REAL EXAM QUESTIONS AND
CORRECT ANSWERS [6 EXAMS IN 1]
1. Which bloodborne pathogen is most easily passed through sharing a
razor?
A) HIV
B) Hepatitis B (HBV)
C) Hepatitis C (HCV)
D) CMV
Answer B: Hepatitis B (HBV)
Rationale: HBV is highly infectious and can survive outside the body, making
sharing razors a common transmission route. It is more easily transmitted than HIV
or HCV through blood contact.
2. What is the most common bloodborne pathogen in the United States?
A) HIV
B) Hepatitis C (HCV)
C) Hepatitis B (HBV)
D) HTLV
Answer B: Hepatitis C (HCV)
,Rationale: HCV is the most common bloodborne pathogen in the U.S., affecting
approximately 2.4 million people. It is primarily transmitted through blood-to-
blood contact.
3. What is the seroconversion rate for HIV after a needlestick injury from a
known carrier of the disease?
A) Approximately 10%
B) Approximately 5%
C) Less than 1%
D) Approximately 25%
Answer C: Less than 1%
Rationale: The risk of HIV seroconversion after a needlestick injury from an HIV-
positive patient is very low, estimated at 0.3% (less than 1%). However, HBV and
HCV have higher transmission rates.
4. How long can herpes viruses live on common surfaces?
A) 2 hours
B) 8 hours
C) 24 hours
D) 72 hours
Answer C: 24 hours
Rationale: Herpes viruses can survive on dry surfaces for up to 24 hours, making
environmental disinfection important in clinical settings.
,5. What is the most effective way to prevent the spread of gastrointestinal
pathogens?
A) Use alcohol-based hand sanitizer
B) Wash hands with soap and water
C) Wear gloves during all procedures
D) Clean all surfaces with bleach
Answer B: Wash hands with soap and water
Rationale: Soap and water are more effective than alcohol-based sanitizers for
removing gastrointestinal pathogens like norovirus and C. diff, which are resistant
to alcohol.
6. What percentage of people are carriers of Staphylococcus aureus on their
skin?
A) 1 in 10
B) 1 in 3
C) 1 in 5
D) 1 in 50
Answer B: 1 in 3
Rationale: About one-third of the population is colonized with S. aureus, often
asymptomatically, which is why hand hygiene and Standard Precautions are
essential.
, 7. Large outbreaks of which infection have been reported in clusters
associated with acupuncture clinics?
A) HIV
B) Mycobacterium other than tuberculosis (MOTT)
C) Hepatitis B
D) Staph aureus
Answer B: Mycobacterium other than tuberculosis (MOTT)
Rationale: MOTT infections have been linked to contaminated equipment in
acupuncture clinics, highlighting the importance of proper sterilization and
infection control.
8. True or False: Standard Precautions require that you treat patients as if all
patients carry infections and are immunocompromised.
A) True
B) False
C) Only if they have a known diagnosis
D) Only during flu season
Answer A: True
Rationale: Standard Precautions assume all patients may be infectious, regardless
of their diagnosis or perceived health status. This approach protects both the
practitioner and the patient.
WITH 530 REAL EXAM QUESTIONS AND
CORRECT ANSWERS [6 EXAMS IN 1]
1. Which bloodborne pathogen is most easily passed through sharing a
razor?
A) HIV
B) Hepatitis B (HBV)
C) Hepatitis C (HCV)
D) CMV
Answer B: Hepatitis B (HBV)
Rationale: HBV is highly infectious and can survive outside the body, making
sharing razors a common transmission route. It is more easily transmitted than HIV
or HCV through blood contact.
2. What is the most common bloodborne pathogen in the United States?
A) HIV
B) Hepatitis C (HCV)
C) Hepatitis B (HBV)
D) HTLV
Answer B: Hepatitis C (HCV)
,Rationale: HCV is the most common bloodborne pathogen in the U.S., affecting
approximately 2.4 million people. It is primarily transmitted through blood-to-
blood contact.
3. What is the seroconversion rate for HIV after a needlestick injury from a
known carrier of the disease?
A) Approximately 10%
B) Approximately 5%
C) Less than 1%
D) Approximately 25%
Answer C: Less than 1%
Rationale: The risk of HIV seroconversion after a needlestick injury from an HIV-
positive patient is very low, estimated at 0.3% (less than 1%). However, HBV and
HCV have higher transmission rates.
4. How long can herpes viruses live on common surfaces?
A) 2 hours
B) 8 hours
C) 24 hours
D) 72 hours
Answer C: 24 hours
Rationale: Herpes viruses can survive on dry surfaces for up to 24 hours, making
environmental disinfection important in clinical settings.
,5. What is the most effective way to prevent the spread of gastrointestinal
pathogens?
A) Use alcohol-based hand sanitizer
B) Wash hands with soap and water
C) Wear gloves during all procedures
D) Clean all surfaces with bleach
Answer B: Wash hands with soap and water
Rationale: Soap and water are more effective than alcohol-based sanitizers for
removing gastrointestinal pathogens like norovirus and C. diff, which are resistant
to alcohol.
6. What percentage of people are carriers of Staphylococcus aureus on their
skin?
A) 1 in 10
B) 1 in 3
C) 1 in 5
D) 1 in 50
Answer B: 1 in 3
Rationale: About one-third of the population is colonized with S. aureus, often
asymptomatically, which is why hand hygiene and Standard Precautions are
essential.
, 7. Large outbreaks of which infection have been reported in clusters
associated with acupuncture clinics?
A) HIV
B) Mycobacterium other than tuberculosis (MOTT)
C) Hepatitis B
D) Staph aureus
Answer B: Mycobacterium other than tuberculosis (MOTT)
Rationale: MOTT infections have been linked to contaminated equipment in
acupuncture clinics, highlighting the importance of proper sterilization and
infection control.
8. True or False: Standard Precautions require that you treat patients as if all
patients carry infections and are immunocompromised.
A) True
B) False
C) Only if they have a known diagnosis
D) Only during flu season
Answer A: True
Rationale: Standard Precautions assume all patients may be infectious, regardless
of their diagnosis or perceived health status. This approach protects both the
practitioner and the patient.
