The swine flu outbreak reported in the United States and Mexico has not been found in King County or Washington state as of Sunday.

Public Health – Seattle and King County sent a document to the healthcare community Friday stating no suspected cases of swine flu have been documented in King County.

Currently no cases have been reported on the agency’s Web site.

The health agency noted the virus appeared to be spreading from “human to human.”

The Center for Disease Control and Prevention listed 20 cases today on its Web site, eight in New York, seven in California, two in Texas, two in Kansas and one in Ohio. The center reported each person has recovered from the illness.

The King County health agency document written Friday noted, “The symptoms of swine flu in people are expected to be similar to the symptoms of regular human seasonal flu and include fever, lethargy, lack of appetite and coughing. Some people with swine flu also have reported runny nose, sore throat, nausea, vomiting and diarrhea.

“Persons with SIV (swine flu virus) infection should be considered potentially contagious for up to seven days following illness onset or until symptoms have resolved. Children, especially younger children, might potentially be contagious for longer periods. The duration of infectiousness might vary by SIV strain. Infection control measures include airborne precautions for hospitalized patients.”

The document also stated, “As always, persons with a respiratory illness with fever should stay home from work or school to avoid spreading influenza and other respiratory illnesses to others in their communities.”

According to the World Health Organization Web site the virus is a new subtype “not previously detected in swine or humans.”