Over the past two weeks a severe strain of influenza in Waterloo Region has sent nine people to the hospital and caused one death. The person who died was over 65 and had an underlying health condition, according to Region of Waterloo Public Health.

"We would expect that this time of year," said Kristy Wright, manager of infectious disease with Region of Waterloo Public Health. "So really our season is starting to ramp up now...early estimates have us peaking somewhere in the next couple of weeks. So it could be a rough ride through the Christmas season."

In a news release, public health officials reported that H3N2 flu is the predominant virus in Ontario to date. In the 2012-2013 flu season, H3N2 flu sent more people to the hospital and caused higher mortality rates compared to other years.

Wright warned this year's vaccine might not be as effective as usual.

"Occasionally what happens is what we're seeing this year, which is the prediction is a bit less accurate in terms of what's circulating. So the type of H3N2 that's in this year's vaccine, doesn't appear to be what the predominant H3N2 that's circulating in the community," said Wright.

Wright added that the vaccine is still important to get because it will still offer some protection.

Flu symptoms

According to public health, symptoms of influenza can include fever, chills, cough, sore throat, fatigue and muscle or joint aches.

Here's some advice Region of Waterloo public Health on what to do if you experience symptoms: