Prof Robert Dingwall, from Nottingham Trent University, feared the pandemic could kill as many as the Hong Kong flu outbreak in 1968, when a million people died worldwide.
"Unfortunately, I'm not sure that they guessed too well this year since we are seeing so much", Grayson said. "It kills those who are frail".
"People are in more cramped quarters", he said. He works as the state's operations director for the company Dis.In.Fx.
Janet Hill, of the Rock Island County Health Department said that in IL, flu cases don't have to be reported to health departments, unless someone is in intensive care because of the flu.
Australia is recovering from its worst flu outbreak on record with the number of people needing hospital treatment double that of a year ago.
The flu strain - H3N2 - swept through Australia over its winter with 170,000 cases recorded, including a number of deaths.
Each year, when scientists put together the flu shot, they take an educated guess on what strains of the flu virus will best protect the most patients. "Not a different strain, but it's a different type", said Dr. Dan Quan.More news: Ivy League student found dead in California park where he went missing
"It's a nasty domino effect", Mr. Gustafson said.
"Stay home as long as you have symptoms, even if you don't have a fever anymore", Canwell says.
Across the country in DE, the Division of Public Health (DPH) says lab-confirmed cases of influenza in DE have increased significantly over the last few weeks.
"Getting vaccinated is not just about protecting yourself, it also protects people around you, including those who are more vulnerable, like babies and young children, older people, and people with certain chronic health conditions". It is not doctor diagnosed. "We think we have likely peaked we will know better in a couple of weeks when the lab reports from the holiday season".
On Monday January 15, anyone showing flu symptoms, or under the age of 12 years will have visitor limitations at St. Peter's.
Flu shots are still being offered across North Texas.
Flu vaccinations had an effectiveness rate of about 32 percent, Berg said, getting a flu shot can be "life-saving". "Staying home when you are sick and practicing good health habits like covering your cough and washing your hands helps stop the spread of germs and prevents respiratory illnesses like the flu".