The Flu has already killed 46,000 Americans this flu season, 575,000 world wide. People pass it on to others all the time and others pay the price. There's nothing we can do to stop that.
Minnesota just this past week finally got the resources for limited testing... if you get a cough or sniffle, can you get tested for it? Absolutely not... they only have the resources to test cases they deem high risk. Yet the State health officials said they think there has been a background level of infection present in Minnesota going back to January most likely.
They recently discovered over the past week that the infection rate is likely astronomically higher than they were aware of, as many who have tested positive never develop symptoms in the first place. That means many thousands were likely infected and never knew it in the first place because they never got sick.
Yes... there is still a lot "unknown" about this, but just because it's unknown doesn't mean we need to be "overly concerned" either. Do what you would do to prevent getting the flu or cold (ie wash your hands regularly, limit your exposure to those who are sick etc). If you are doing that, you're fine, nothing more to be concerned about.