What is the typical incubation time for Norwalk virus?

The typical incubation period for Norwalk virus, which is known for causing gastroenteritis, is generally between 24 to 48 hours. This means that if someone is exposed to the virus, symptoms such as vomiting, diarrhea, and stomach discomfort usually begin to manifest within this timeframe. Understanding the incubation period is crucial for controlling outbreaks and implementing appropriate public health measures, as it helps in identifying potential sources of infection and preventing further spread. The short incubation period, alongside the virus's high transmissibility, contributes to the quick onset of outbreaks in group settings, such as schools and cruise ships.