Tick That Triggers Red Meat Allergy Spreading Across U.S.

CBS Local — Most severe allergic reactions to food occur within 20 minutes of exposure. But the reaction to red meat after a lone star tick bite is much different.
The lone star tick, which can trigger a life-threatening allergy to mammalian meat like beef, pork and lamb, is spreading far beyond where it originated in the southeastern U.S., scientists say.
The tick’s bite generates an allergy to a sugar molecule in red meat known as alpha-galactose, or “alpha-gal,” and ca