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.
Symptoms may include: 1  Fever or feeling feverish/chills. 2  Cough. 3  Sore throat. 4  Runny or stuffy nose. 5  Muscle or body aches. 6  Headache. 7  Tiredness. 8  Some people may have vomiting or diarrhea; this is more common in children. How long is a person with the flu contagious? You can pass the flu to others from 1 day before you have symptoms up to 5-7 days after you get sick. Some people might be able to infect others even longer. Is there treatment? The flu can be treated with antiviral drugs if started soon after you get sick.