Alissa England knew the moment a doctor uttered the words "103.8 degrees," that she had a bit of a problem on her hands.

"It felt like I'd been hit by a car," she said. Two days and a regimented schedule of Tamiflu later, she's beginning to feel slightly better.

It's a story that's being repeated in homes all across America as the country grapples with one of the worst influenza seasons in years.

"The rates are still going up, so we're in the midst of it," said Denver Public Health Director Dr. William Burman on Friday.

The same day a spokesperson for the Centers for Disease Control said the problem is accelerating. Forty one states are now reporting widespread influenza activity. That number now includes Colorado. Last week that number was 31 and did not include Colorado.

"Flu is the most underestimated illness around. I think it's the Rodney Dangerfield of infectious disease. It doesn't get the respect it should," added Dr. Burman. "It kills between 5 to 35 thousand people a year. If we had a new illness that did even half of that it would be on the front pages of every newspaper in the United States."