Usborne Books - Lift-The-Flap First Questions and Answers: What Is A Virus?

Our lives have been taken over by a tiny virus we can't even see. But what is a virus? How do viruses spread? Why should everyone keep washing their hands? How does a vaccine work? And what can we do to STAY WELL? Lift the flaps to find out.,

, Note: Video is for Demonstrational purposes only, ,