St. Louis County has seen a slight drop in the number of new flu cases this past week, while St. Charles County has seen a slight rise.
With the growing number of cases being reported, activity level for the flu was revised from high to very high.
Since the beginning of this flu season, 45 Oklahomans have died due to the flu, according to the Oklahoma Health Department. Here in Tulsa County, 338 people have been hospitalized since flu season began in September, and the county is now reporting ten deaths.
The Cuyahoga County Public Health Collaborative reported the totals Thursday in its influenza report for the week of January 7-13.
The Douglas County Health Department said there have been four flu deaths and hundreds of new flu cases in the past week.
Those who died were a 78-year-old from Cleveland, a 101-year-old from Euclid and a 95-year-old from Rocky River, the collaborative reported.More news: '12 Strong': Chris Hemsworth Hopes Film Can Reduce 'Misconceptions' About Afghanistan
Symptoms of the flu include fever, headache, cough, runny or stuffy nose, fatigue and muscle aches.
A nurse draws a dose of flu vaccine.
Local health experts say this is the worst outbreak in more than decade, with children being especially hit hard.
Pour said the flu virus constantly changes and that it is not too late to get vaccinated. "The vaccine helps your body develop protection in two weeks and can lessen severity if one gets the flu".
The flu season typically lasts from October through May.
Young people under 10 and those 60 and over, as well as anyone with a weakened immune system, heart, lung and kidney disease; and diabetes are most at risk of developing serious influenza from the H3N2 strain.