Some tick bites can cause Alpha-gal syndrome (AGS), making people allergic to red meat and some other mammal products. Three tick species in the U.S. are known to transmit AGS: the lone star tick ...

However, new reports of the allergy, called alpha-gal syndrome, show that the much more widespread black-legged ticks (Ixodes) can also transmit the disease. The new case reports suggest that ...