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A new and unknown virus is spreading like wildfire across the planet. Children no longer go to school. Shops, factories and offices are closed. And there is still no cure or vaccine for the disease. But there is hope, because the world's smartest scientists have gathered in a secret laboratory...

From this book, children will learn a lot about the immune system and its defence mechanisms, acquired and innate. A fascinating journey through the body will give readers a comprehensive understanding of the immune system, tell them about viruses and how to fight them.