Stomach Bug 2024 Lasting A Long Time. Norovirus, also called the winter vomiting bug, is a stomach bug that causes vomiting and diarrhoea. Stomach flu usually only lasts a few days, but it may last up to a week or two in severe cases.

This article will explain how long stomach flu is contagious for and how long the symptoms. If you’ve been bit by a stomach bug lately, you’re not alone.