Flu season arrives with coughs and sniffles

Flu season has arrived in Sonoma County, announced with a chorus of coughs and sniffles and a rush on Vitamin C.

"The flu stuff is flying off the shelf," said Sue Deevy, who works in the health and beauty aids section at Oliver's Markets in Cotati.

"It's on our doorstep," said Karen Holbrook, interim health officer with the county's Department of Health Services.

Instances of the flu have jumped in recent weeks, said Gary Green, chief of infectious diseases at Kaiser Medical Center in Santa Rosa. Kaiser's northern California region, which stretches from San Jose to Santa Rosa, saw the percent of people testing positive for one flu virus, influenza A, leap to 27 percent in the week that ended Sunday. That was up from 7 percent two weeks earlier.

Sonoma and Marin counties are currently a hot spot within the larger region, Green said. Locally, in the week that ended Dec. 29, 34.8 percent of people tested positive for influenza A and an additional 4.3 percent tested positive for influenza B, which tends to be less severe.

"Nationally, Texas and the southeast are the hot spots for the flu right now," he said. "Our numbers in Sonoma and Marin are just as high."

So far, hospital emergency rooms have had few confirmed cases of the flu. Green noted that a young, otherwise healthy adult currently was hospitalized at Kaiser, critically ill with the flu. There also have been two confirmed cases at Santa Rosa Memorial Hospital and four at Petaluma Valley Hospital, said Katy Hillenmeyer, a spokesperson with St. Joseph Health, which runs both hospitals.

But just this week, 52 people showed up at Santa Rosa Memorial's emergency room with flu-like symptoms, she said, "So it is likely that flu activity is picking up as we approach January and February, which for us are typically busier months in terms of treating the flu."

"It's right on schedule," said David Smith, a pediatrician with Annadel Medical Group, adding that high levels are typically first seen on the east coast, which is where the flu has been the most active so far this year. According to the Centers for Disease Control and Prevention, the flu is now considered widespread in 10 states, mainly in the northeast and south. The flu travels west as people get on airplanes for the holidays, Smith said.

The most common strain so far in Sonoma County and around the nation is H1N1, a strain of influenza A. In 2009, a form of H1N1 caused a national pandemic.

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