Stomach Bug 2024 Summer Holidays. Norovirus, commonly known as the winter vomiting bug (although it can strike at any time of year), is a stomach bug that causes sickness and diarrhoea. Norovirus, also called the winter vomiting bug, is a stomach bug that causes vomiting and diarrhoea.
Most cases are easily treatable and resolve in one to three days. Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is still spreading in the united states.