Read all five sections about microbes. Try the game to work out which micro-organism is responsible for a super-flu outbreak. Take the quiz.

Follow the activity instructions. Look for places where micro-organisms can be found. Sort useful micro-organisms from harmful ones. Take a quiz.

Find out about the differences between types of micro organisms and have a go at the matching games.

Learn about antibodies and your body's immune defences whilst playing this game. Can you find all the infected people and cure them before the flu spreads?