Tick-Borne Antibody Signals Higher Red Meat Allergy Risk Than Expected

A CDC analysis of 3,000 adults across 10 states found about 24% in five states with high lone star tick activity have antibodies to alpha-gal, indicating prior tick bites and potential risk for alpha-gal syndrome (a red meat allergy). Antibodies show exposure, not disease, so not everyone will develop symptoms. The true prevalence is uncertain, and cases are not nationally notifiable; ticks and affected areas may expand as deer move and winters warm. Symptoms typically appear hours after eating red meat, and the condition is lifelong once developed.