You can do a lot to keep yourself healthy. Avoiding germs, eating a balanced diet, getting enough rest -- all these steps and more can put you on the road to good health. How much do you know about preventing disease? Take this quiz and find out.
Take a look at the influenza virus under a microscope and you'll see a funny-looking spiked ball, much like the famous Russian satellite Sputnik. But if you've ever been flat on your back with the flu, you know there's nothing funny about this highly contagious virus. Test your savvy by taking this quiz.