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.
With some viruses, you're contagious for as long as you have symptoms or even beyond. With others, you continue to have symptoms after youâre no longer contagious. Adults who have the flu are contagious for five days after first developing symptoms, while kids can stay contagious even longer. If you have a cold, you're most likely to give it to someone else during the first few days of having a runny nose, sneezing, and coughing.