Question 1

A healthcare worker experiences a percutaneous exposure to a patient with untreated HIV. The next step is to:

Options :

A : Initiate HIV post-exposure prophylaxis (PEP) within 2 hours.

B : Wait for HIV test results before starting treatment.

C : Offer post-exposure prophylaxis only if symptoms develop.

D : Retest for HIV after 6 months before deciding on PEP.

Answer: A

Question 2

In which of the following ways is human immunodeficiency virus similar to the Hepatitis B virus?

Options :

A : The primary mechanism of transmission for both is maternal-fetal

B : Needlestick exposure leads to a high frequency of healthcare worker infection

C : Transmission may occur from asymptomatic carriers

D : The risk of infection from mucous membrane exposure is the same

Answer: C

Question 3

Which statistical test is MOST appropriate for comparing infection rates before and after an intervention?

Options :

A : Student’s t-test

B : Chi-square test for proportions

C : Linear regression analysis

D : Wilcoxon rank-sum test

Answer: B

Question 4

An infection preventionist is reviewing employee health immunization policies. What is the recommendation for tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis (Tdap) for a 55-year-old nurse who received all childhood vaccinations?

Options :

A : One dose of Tdap vaccine

B : Two doses of Tdap vaccine at least 14 days apart

C : Two doses of Tdap vaccine at least 28 days apart

D : No additional vaccination is recommended

Answer: A

Question 5

Which of the following operating suite design features is LEAST important for the prevention of infection?

Options :

A : Type of floor material

B : Positive pressure air handling

C : Placement of sinks for surgical scrubs

D : Control of traffic and traffic flow patterns

Answer: A