"But uh-oh--some germs are just tricky to spot, They hide in the shadows and wiggle a lot." This is a story about special glasses that scientists can give immune cells that are called vaccines to spot those pesky germs. What do immune cells do and why do they sometimes need our help? Why do we have to get different kinds of vaccines? How do vaccines protect us and those around us? Perfect for curious young minds, who enjoy a good rhyme and a fun time.
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