Who discovered germ theory? Why do we need vaccines? When did people start using antibiotics? Each book in Super Science Feats: Medical Breakthroughs profiles a specific accomplishment in the history of medicine and how those advancements influence our world today, covering relevant topics such as COVID-19. Bright, full-color photographs complement the carefully leveled text to make reading easy and fun. Each title includes an infographic, a glossary, and an index to aid comprehension. In Germ Theory, readers will learn about the science behind the discovery of germ theory and how diseases spread. Vibrant, full-color photos and carefully leveled text will engage readers as they learn more about preventing the spread of germs and how this super science feat has impacted our world today, from COVID-19 to the common cold to the seasonal flu. A Take a Look! infographic aids understanding, sidebars present interesting, supplementary information, and an activity helps readers learn more. Children can learn more about germ theory using our safe search engine that provides relevant, age-appropriate websites. Germ Theory also features reading tips for teachers and parents, a table of contents, a glossary, and an index. Germ Theory is part of Jump!'s Super Science Feats: Medical Breakthroughs series.