Allergies are on the rise in the United States. The Centers for Disease Control found that, between 1997 to 1999, 3.4 percent of children had food allergies, compared to 5.1 percent between 2009 and 2011.
In response, a number of companies are developing products to help patients manage their conditions. These include immunotherapies to desensitize people, tests to identify allergens in the environment and an app that helps people respond to acute attacks.
