How many people died from norwalk virus?

Norovirus, often referred to as the "stomach flu," typically causes gastrointestinal illness rather than severe disease, and fatalities are relatively rare. While it is estimated that norovirus leads to around 19 to 21 million infections annually in the U.S., the number of deaths is usually low, with estimates ranging from about 400 to 800 deaths each year in the U.S. Most fatalities occur in vulnerable populations, such as the elderly or those with underlying health conditions. Overall, norovirus is more associated with illness and outbreaks than with high mortality rates.