Thank you for your comments, Thaddeus.
The information for the quiz questions & answers comes from a couple of sites I included in the Resources: CDC Prevent Seasonal Flu & 10 Flu Myths from Harvard Medical school.
The feedback for the question about the best way to prevent the flu says: "The flu vaccine is the first and best way to prevent influenza. It's also good to avoid contact with sick people, and wash your hands frequently."
I believe that's an accurate representation of the information from the CDC, and I don't think it tells people they don't need to avoid sick people or wash their hands. In fact, it says the opposite.