How do germs make animals-and people-sick, and what defenses do bodies have?With this kid-friendly introduction to immune systems and the enemies they battle, Montgomery adds to an impressively entertaining body of work. Organized around different animals, the chapters follow scientists noticing odd happenings in the face of infection-or animals avoiding expected infection entirely. Montgomery highlights the questions these scientists ask: What's the connection between frog temperature and infection survival? Why do ants kill infected pupae? How do injured gators survive their bacteria-heavy environment and vultures their contaminated food? The author traces the scientists' logic as they test various hypotheses; she then demonstrates how we can learn from these findings to devise new strategies to help people. Keeping her tone conversational, occasionally relying on anthropomorphizing, and framing her stories as mysteries, Montgomery makes even the most complex concepts concrete and digestible-young readers won't just understand the microbiology at play; they'll enjoy the subject, too. Illustrations throughout also enhance clarity as well as (especially in short comic panels) keeping the book fun. Gross facts ("Chimps pee and poop right off the sides of their daybeds!") are just the cherry on top of this book that brims with child appeal. Final art not seen.A pathologically good time. (more super symbionts, selected sources, illustration credits, index) (Nonfiction. 10-adult)

How do germs make animals-and people-sick, and what defenses do bodies have?With this kid-friendly introduction to immune systems and the enemies they battle, Montgomery adds to an impressively entertaining body of work. Organized around different animals, the chapters follow scientists noticing odd happenings in the face of infection-or animals avoiding expected infection entirely. Montgomery highlights the questions these scientists ask: What's the connection between frog temperature and infection survival? Why do ants kill infected pupae? How do injured gators survive their bacteria-heavy environment and vultures their contaminated food? The author traces the scientists' logic as they test various hypotheses; she then demonstrates how we can learn from these findings to devise new strategies to help people. Keeping her tone conversational, occasionally relying on anthropomorphizing, and framing her stories as mysteries, Montgomery makes even the most complex concepts concrete and digestible-young readers won't just understand the microbiology at play; they'll enjoy the subject, too. Illustrations throughout also enhance clarity as well as (especially in short comic panels) keeping the book fun. Gross facts ("Chimps pee and poop right off the sides of their daybeds!") are just the cherry on top of this book that brims with child appeal. Final art not seen.A pathologically good time. (more super symbionts, selected sources, illustration credits, index) (Nonfiction. 10-adult)