 You'll find more information at thetalkofdelmarva.com. And Delaware public health officials have confirmed six cases of alpha-gal syndrome in the first state, and AGS is now reportable in Delaware. AGS is not caused by an infection, but is an allergic condition and is associated with the bite of a lone star tick, and it may be caused by other types of tick bites as well. The lone star tick, though, is the most common species in Delaware.