Robert is diagnosed with varicella. He went to a clinic with a mild fever, loss of appetite, and rashes on the chest area. When he asked about the disease. Which statement describes the contagious stage of varicella?
A. The contagious stage is 1 day before the onset of the rash until all the lesions are crusted.
B. The contagious stage is 1 day before the onset of the rash until the appearance of vesicles.
C. The contagious stage lasts during the vesicular and crusting stages of the lesions.
D. The contagious stage is from the onset of the rash until the rash disappears.
Correct Answer: A. The contagious stage is 1 day before the onset of the rash until all the lesions are crusted.
Option A: Varicella is a highly contagious disease caused by the varicella-zoster virus. A person is considered to be contagious 24 hours before the onset of the rash and lasts until all the lesions are crusted.