Peak flu season isn't even here yet, but health officials say they’re seeing a lot of people admitted to the hospital with flu-like symptoms.

"It’s here and it's here with a large force," says Dr. Daniel Wehner, Chair of the Department of Emergency Medicine at Conemaugh Memorial Medical Center in Johnstown.

He’s referring to this year’s flu virus, Influenza.

"Last year we had virtually no flu. The year before we had a little, a year before that there was a lot and we have a lot again this year. Why exactly I don't think anybody really knows," said Wehner.

But what they do know is that the vaccines some have received to prevent the flu, isn't stopping them from heading to the hospital.

"All of the patients that I have seen that have had the flu shot that have gotten the flu are all elderly," said Wehner.

"It’s impossible at times to determine even whether or not it's the flu or whether it's some other virus that rapid flu test that we use and all hospitals use is not all that sensitive. Anywhere from 40 to 60 percent of the time our rapid test will miss people who actually have the flu," said Wehner.

And when it is a bad year for the flu, more viruses and bacteria’s become prevalent, such as Whooping Cough, which is an uncontrollable, violent cough.

"A year or two ago we didn't diagnose it at all, now we're diagnosing it maybe once a month so it's not rampant by any means but it's more common than it used to be," said Wehner.