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.
Answer: The tricky thing about flu viruses and viruses in general -- you yourself can actually be contagious a whole day prior to developing symptoms. And you can be contagious up to five days once you've developed symptoms.nswer: The tricky thing about flu viruses and viruses in general -- you yourself can actually be contagious a whole day prior to developing symptoms. And you can be contagious up to five days once you've developed symptoms.