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Why Meningitis That Hit Princeton Is Hard To Beat With Vaccines

Developing a vaccine for meningitis B was tricky. Even the existing vaccine doesn't protect against all B strains. Josef Muellek/iStockphoto.com hide caption

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Josef Muellek/iStockphoto.com

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Why Meningitis That Hit Princeton Is Hard To Beat With Vaccines

It turns out that the bacteria that are responsible meningitis B have a sugar coating that makes them look a lot like human cells. That similarity makes development of a vaccine against the germs especially tricky.