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How a bite from a 'lone star' tick can trigger severe allergy to meat

02:44

A bite from a lone star tick is believed to be giving some people alpha-gal syndrome, which causes an allergy to red meat and other foods. If identified and treated correctly, symptoms can still persist for three to five years. NBC’s Morgan Chesky reports for TODAY.

Woman with tick-induced meat allergy recalls life-threatening reaction: ‘Terrifying’