FREE Ultimate CBIC Question and Answers

Question 1

The ideal time to obtain a sample of sputum for testing acid-fast bacillus is:

Accepted Answer

early morning

Answer

The ideal time to collect a sputum sample for acid-fast bacillus (AFB) testing is in the early morning. During sleep, respiratory secretions accumulate in the lungs, leading to a higher concentration of mycobacteria in the first morning sputum. This increased concentration enhances the diagnostic yield and accuracy of the test for detecting tuberculosis or other mycobacterial infections.

Question 2

How long is a patient contagious after being exposed to the West Nile virus?

Accepted Answer

6-7 days before symptoms occur

Answer

West Nile virus is primarily transmitted to humans through mosquito bites, and humans are considered 'dead-end hosts,' meaning they generally do not transmit the virus to other humans or effectively to mosquitoes. While the virus is present in the blood (viremia) for a period, typically before and around symptom onset, humans are not considered contagious in the traditional sense of person-to-person spread. The answer refers to the period of viremia that can precede symptoms.

Question 3

Which teaching method (Grasha) places more emphasis on content than on relationships with students?

Accepted Answer

Formal authority

Answer

In Grasha's teaching styles, the 'Formal Authority' method is characterized by the teacher's role as the expert and primary source of knowledge. This style prioritizes the delivery of content and maintaining control over the learning process, with less emphasis placed on developing personal relationships or fostering student-led interactions. The focus is on the teacher's authority and the subject matter.

Question 4

Which of the following is an example of passive case finding in a suspected outbreak?

Accepted Answer

Examine county surveillance data

Answer

Passive case finding involves relying on existing surveillance systems and healthcare providers to report cases as they are identified through routine processes. Examining county surveillance data is a prime example of this, as it involves reviewing already collected and reported information. This contrasts with active case finding, which involves actively searching for cases through direct outreach or screening.

Question 5

Which of the following tests for Clostridium difficile diagnosis has the BEST sensitivity and specificity?

Accepted Answer

Nucleic acid amplification, including PCR

Answer

Nucleic acid amplification tests (NAATs), including PCR, are considered the most sensitive and specific methods for diagnosing *Clostridioides difficile* infection (CDI). These tests directly detect the toxin genes of *C. difficile* with high accuracy, providing reliable results. They are superior to toxin enzyme immunoassays (EIAs), which can have lower sensitivity, and glutamate dehydrogenase (GDH) tests, which are sensitive but less specific.

CBIC - Certification Board of Infection Control Practice Test

CBIC - Certification Board of Infection Control Practice Test

FREE Ultimate CBIC Question and Answers