13. Which of the following correctly distinguishes isolation from quarantine?

Which of the following accurately describes Stage 2 (chronic HIV infection)?

What is the typical testing window for gonorrhea, and what may a doctor recommend if the first test is negative shortly after exposure?

16. Which of the following is cited as the most important method for preventing nosocomial infections in healthcare settings?

What occurs during Phase II clinical trials in the vaccine testing process?

Which of the following factors would a doctor consider when deciding between a CT scan and an MRI scan for a patient?

6. ‘Notifiable diseases’ are diseases that:

What is the difference between an STI’s “incubation period” and its “window period”?

A 45-year-old woman presents with sudden onset of swelling, warmth, and pain in her left lower leg. Duplex ultrasound of the left leg reveals a non-compressible femoral vein with hypoechoic material within the lumen and absent color flow on Doppler imaging. Spectral Doppler shows continuous, monophasic flow in the femoral vein proximal to the obstruction. What is the most likely diagnosis?

2. The terms ‘contagious’ and ‘communicable’ are used interchangeably in the lecture to describe diseases that are: