Germs Make Me Sick! (Let's Read-and-Find-Out Book)

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Explains how bacteria and viruses affect the human body and how the body fights them.
Bacteria, juvenile literatureBacteriologyViruses, juvenile literatureVirusesJuvenile literatureBacteriaMedical microbiologyBacterial diseasesSpanish language materialsVirus diseasesMicrobiologyBiology, juvenile literature