A study reveals up to 30% of individuals in some US regions may carry antibodies linked to a meat allergy caused by tick bites. This suggests a larger population at risk than previously estimated, highlighting challenges in diagnosis and awareness of alpha-gal syndrome.
A recent study published in the Morbidity and Mortality Weekly Report indicates that in some areas of the US, up to 30 percent of the population may possess antibodies related to a red meat allergy instigated by tick bites. This significantly exceeds earlier CDC estimates, which suggested that only about 0.14 percent, equating to up to 450,000 people, have this allergy.
The allergy, known as alpha-gal syndrome, occurs when individuals develop IgE antibodies against a sugar molecule called galactose-Ξ±-1,3-galactose (alpha-gal). This molecule is found in the cells of non-primate mammals and is also introduced to humans through the saliva of bite from the lone star tick. The allergy can trigger reactions to not only red meat but also dairy and gelatin.
Symptoms of alpha-gal syndrome can arise between two to six hours after consuming affected food, making it difficult for sufferers to associate their reactions with specific foods. Common symptoms include hives, nausea, vomiting, abdominal cramps, diarrhea, and severe allergic responses such as anaphylaxis.
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A study reveals up to 30% of individuals in some US regions may carry antibodies linked to a meat allergy caused by tick bites. This suggests a larger population at risk than previously estimated, highlighting challenges in diagnosis and awareness of alpha-gal syndrome.