Large, clear photos showing petri dishes of bacteria, patients receiving vaccinations, or archival images of early researchers fill the pages of this series. Information is organized into short chapters with brief paragraphs on each spread and additional facts in "Did You Know?" text boxes. Each title features an infographic, such as a flowchart on the production of penicillin. There is also a hands-on activity for each topic, such as using glitter and soap to demonstrate how germs spread. The books also mention how COVID-19 relates to each topic. Glossary words appear in bold within the text and are defined in the back matter. General recommendations for parents and teachers appear in each book, as well as directions on how to access the FactSurfer website for more information on each subject. VERDICT A good series to update library collections and answer student questions.-- "School Library Journal"