Peanut Food Allergies

The Centers for Disease Control and Prevention is issuing its first government guidelines on how to protect schoolchildren with food allergies.

The voluntary guidelines call on schools to take such steps as restricting nuts, shellfish or other foods that can cause allergic reactions, and make sure emergency allergy medicine -- like EpiPens -- are available.

Food allergies are a growing concern. A recent CDC survey estimated that about 1 in 20 U.S. children have food allergies -- a 50 percent increase from the late 1990s. Experts aren't sure why cases are rising.