Final answer:
The average incubation period for localized genital herpes simplex infection is typically between 2 and 12 days.
Step-by-step explanation:
The average incubation period for localized genital herpes simplex infection can vary, but it is typically between 2 and 12 days. This means that after exposure to the virus through sexual activity, symptoms may start to appear within this timeframe. However, it's important to note that some individuals may not experience any symptoms or may have very mild symptoms that go unnoticed.