What is the typical incubation period for varicella after exposure?

What is the typical incubation period for varicella after exposure?

• A. 7 days
• B. 14 days
• C. 21 days
• D. 28 days

Answer: (C)

Varicella incubation is the time from exposure to the first sign of illness. For chickenpox, this period is typically about two weeks, but it can range from roughly 10 to 21 days. In exam-style questions, 21 days reflects the upper end of the usual incubation window used for exposure assessment and return-to-work or quarantine guidance. A week after exposure is usually too soon for the rash to appear, 14 days falls in the common middle of the range but doesn’t capture the maximum typical window, and 28 days goes beyond the usual incubation period. So, 21 days best represents the typical upper limit of the incubation period for varicella.

Varicella incubation is the time from exposure to the first sign of illness. For chickenpox, this period is typically about two weeks, but it can range from roughly 10 to 21 days. In exam-style questions, 21 days reflects the upper end of the usual incubation window used for exposure assessment and return-to-work or quarantine guidance. A week after exposure is usually too soon for the rash to appear, 14 days falls in the common middle of the range but doesn’t capture the maximum typical window, and 28 days goes beyond the usual incubation period. So, 21 days best represents the typical upper limit of the incubation period for varicella.