The Welcome Trust has funded an interactive Flash game that can be played on the web that teaches young people how the flu is spread. You start off as a flu virus and the goal is to infect others. Along the way, you get educational information about viruses. Here are some of the instructions: You are a virus infecting humans. Survive by making your human host sneeze and infect other humans. Infect the target percentage of the population to reach the next round. You can sneeze only ONCE in each round. Move your human with the arrow keys, then press the Space Bar to sneeze. Choose your sneeze carefully. The likelihood of infection and speed of virus transmission varies depending on the ages of your targets – and affects your score! Each round ends when there are no longer any infected people left to sneeze and pass the virus on.