Scientists closer to peanut butter allergy vaccine

U.S. & World
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ANN ARBOR, MI (NBC News) — Scientists are inching closer to a vaccine aimed at preventing a growing problem among American children: Peanut allergies.

The research from the University of Michigan is still early, and only in mice with peanut allergies so far.

But three doses of a nasal vaccine protected the lab animals from allergic reactions for at least two weeks.

The vaccine works by changing the way immune cells respond to allergens. 

The next step will be to see if the protection has a lasting effect.

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