The Department of Health confirmed that 16 people have been diagnosed with Salmonella after coming in contact with live poultry including one in Grays Harbor.
They say the people infected are from 13 counties including Grays Harbor and Mason County.
Five people have been hospitalized, and no deaths have been reported.
Seven of the 16 are children younger than five.
The Centers for Disease Control and Prevention released its outbreak advisory, reporting 372 cases nationwide in 47 states.
People reported obtaining live baby poultry, chicks and ducklings from several sources, including feed supply stores, websites, hatcheries, and relatives.
Chicks, ducklings, and other live poultry that look healthy and clean can carry Salmonella bacteria which are contagious and can cause serious illness.
Children under five, adults over 65, and people with weakened immune systems are most likely to get sick from Salmonella and should avoid handling live poultry.