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How were allergies discovered?

 

November 14, 2018



Dear Dr. Universe: How did we discover allergies? -Zion, 8, Australia

Dear Zion,

Before humans even came up with the word “allergy,” they observed how some people would get rashes, sneezes or become really, really sick from different things in their environment.

Historians even noted how people in ancient civilizations talked about something called “plant fever,” which gave people runny noses.

On the way to discovering allergies, scientists first had to learn about the immune system, which helps protect the body from invaders, or things like bacteria and viruses.

Thes...



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