
State health officials say the flu is still increasing in Arizona with a steep increase seen in the past two weeks.
Since September, more than 140 outbreaks in the U.S. have been caused by the new Sydney strain of norovirus.
The flu hasn't hit Europe as hard as it has the United States, health officials say, but when and if it does, don't expect a call for vaccination of the entire population.

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A Valley radio personality has died after coming down with flu-like symptoms while visiting the Tampa Bay area over the holidays, according to a Florida TV station.
Photo-sharing communities such as Instagram filled with photos of products people were using to battle the flu, from Vitamin C to favorite movies to even a swig of whiskey.
Here is a snapshot of flu activity in all 50 states and the District of Columbia:
With dozens of states reporting widespread flu activity, it's important to protect everyone around you if you yourself feel like you are getting sick.
The spread of the flu across the United States appears to have slowed in portions of five states in the South and Southeast.
If you have the flu and want to get vaccinated, there's a website that will help you find the vaccine in your area.
The flu in Arizona reached widespread status this week after nearly 2,200 cases in total were reported in 14 of the state's 15 counties.
Arizona has become one of the states where the deadly flu outbreak is widespread.
Germs and kids are a bad combination, especially since we're in the midst of what's being called the worst flu season in 10 years.
So if you think you're coming down with the flu, what should you do? Rush to the hospital? Go see a doctor? It depends on who you are.
When it comes to the flu, children are especially vulnerable. Close to two dozen kids have already died from the flu this year.
The flu is rapidly spreading across the country this year, so here's some advice on how you can avoid getting sick.
Wouldn't it be nice if you could have a bowl of soup, a cup of tea or a box of chocolates and make that cold go away?
When asked what keeps him up at night, Centers for Disease Control Director Dr. Thomas Frieden admitted it's the flu.
The influenza virus has dramatically increased this season, up 4,289 percent from this time last year, according to the Arizona Department of Health Service.
Flu Resources
Flu season is in full swing, and the disease has reached "severe" levels in many parts of the country, according to the CDC.
With the number of flu cases spreading across the country, a health and fitness expert has offered up five ways to boost your immunity naturally.
The flu is rapidly spreading across the country this year, so check out some expert advice on how you can try to avoid getting sick.
Flu season is upon us and the virus is attacking many. But how much do you really know about the flu?
Click on the regions or cities below to see news from those areas.
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