Pierce County, Washington. Pierce County is a county in the U.S. state of Washington. As of the 2010 Census, the population was 795,225, making it the second-most populous county in Washington behind King County. The county seat and largest city is Tacoma.
You can be contagious from a few days up to two weeks or more, depending on which virus is causing your stomach flu (gastroenteritis). A number of viruses can cause gastroenteritis, including noroviruses and rotaviruses.
When youâre first contagious: When youâre no longer contagious: Flu: 1 day before symptoms start: 5-7 days after you get sick with symptoms: Cold: 1-2 days before symptoms start: 2 weeks after youâre exposed to the virus: Stomach virus: Before symptoms start: Up to 2 weeks after youâve recovered