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.
You can begin being contagious even one or two days before â¦ you know you have the flu, while you have symptoms - which usually last 7 - 10 days. The rule of thumb is that you are no longer contagious after you go for a full 24 hours without a fever while taking no fever reducing medication.