The Alpha-gal Rural Health Initiative

Goal

Alpha-gal syndrome (AGS) is a serious, sometimes life-threatening allergy to the sugar galactose-α-1,3- galactose (alpha-gal), which is found in all mammals except some primates. Its onset is associated with tick bites. People with AGS react to products made from mammals and to products containing mammalian ingredients. This includes foods such as beef, pork, lamb, venison, dairy products, and gelatin. It also includes drugs and medical devices, such as monoclonal antibodies, heparin, bioprosthetic heart valves, some vaccines, antivenom, and medication in gelatin capsules. Many people with AGS also react to personal care and household products with mammal-derived ingredients.

In the U.S., most AGS cases are caused by lone star ticks, which are common in the southern, midwestern, and mid-Atlantic United States. Preliminary data suggest that other ticks found in the U.S. may also induce AGS, including black-legged ticks (Ixodes scapularis), Western black-legged ticks (Ixodes pacifica), Cayenne ticks (Amblyomma cajennense complex), and invasive Asian longhorned ticks (Haemaphysalis longicornis).

Alpha-gal reactions are often severe and can be fatal. Up to 75% of people with AGS experience anaphylactic reactions, a higher percentage than even peanut allergy. In areas of high prevalence, reactions to alpha-gal can be the number one cause of anaphylaxis in adults and adolescents, accounting for a third of all cases—more than all other food allergies combined. Some studies suggest that AGS may also be responsible for up to 25% of IBS-like symptoms and a significant cause of rheumatological issues in high-prevalence areas. Concerningly, preliminary research in both the U.S. and Australia found that people who are sensitized to alpha-gal, even if they do not develop allergic reactions, may be at increased risk of cardiovascular disease. The NIH is currently funding a follow-up study of this issue.

Rural populations are at greater risk than urban populations. AGS prevalence can be up to 20 times higher in rural populations, where tick exposure is more common, than in urban populations. The burden of alpha-gal syndrome also falls more heavily on rural communities, where people tend to live farther from emergency and specialty care, face reduced access to healthcare, are less likely to have health insurance, and often experience greater economic hardship and lower levels of educational attainment. In some rural areas, food deserts limit the dietary options available to those managing the condition.

AGS presents critical equity concerns, disproportionately impacting lower-income communities and those with limited access to health care. Regions most affected by AGS are among those with the highest poverty rates in the country. These disparities compound the health burden of AGS. 

Not all populations are equally impacted by AGS. Demographic factors contributing to the risk of developing AGS include:

Residence in high-prevalence states, territories, tribal communities, and localities

AGS cases are clustered in high-prevalence areas of the South, lower Midwest, Mid-Atlantic, and coastal regions of New England, where lone star ticks predominate. Three percent or more of the population in the hardest-hit areas may be affected.

Rural residence

Rural populations are at greater risk than urban populations. AGS prevalence can be up to 20 times higher in rural populations, where tick exposure is more common, than in urban populations. 

Employment in high-risk occupations

Populations at occupational risk include farmers and ranchers, agricultural laborers, surveyors, members of the military, park rangers, foresters, veterinarians, field biologists, line and utility workers, people working in landscape maintenance, and others with high tick exposure. 

Farmers and ranchers, for whom AGS represents not just a food and drug allergy but also an occupational allergy, merit special attention. Livestock such as cows, pigs, sheep, and goats are mammals and make alpha-gal. Just as people can be allergic to pets, like cats and dogs, and react when exposed to them, people with AGS can react to livestock exposures. Some livestock exposures, especially to fluids like blood and amniotic fluid, can result in severe and even life-threatening reactions. Waste, saliva, dander, wool, direct contact, and some products used on livestock can also trigger reactions.

Participation in high-risk recreational activities

High-risk recreational activities include those that entail high tick exposure, including hunting, hiking, camping, gardening, and birding. Children who participate in scouts, 4-H, FFA, and other outdoor recreational activities and who attend rural schools are also at higher risk.

The evidence is clear: AGS is a serious and growing threat to rural health, yet awareness among rural providers and communities remains dangerously low. The Alpha-gal Alliance is responding with a targeted two-pronged effort: equipping rural healthcare providers with the tools needed for timely diagnosis and effective management, while raising awareness among the rural populations most at risk.

Alpha-gal Syndrome Education through Extension Networks

The Alpha-gal Syndrome Education through Extension Networks initiative is a coordinated, multi-state effort to develop, standardize, and disseminate evidence-based educational materials on alpha-gal syndrome (AGS) through Cooperative Extension systems. Supported by the Alpha-gal Alliance and led by the University of Kentucky, this initiative brings together Extension professionals and subject matter experts across several states to build consistent, accurate, and accessible AGS education. The project will produce adaptable resources, training materials, and shared messaging to strengthen the reach and reliability of AGS information nationwide. By creating a collaborative network and scalable training framework, this effort will equip Extension systems to provide practical guidance on AGS, tick bite prevention, and lifestyle management, while expanding access to trustworthy information for individuals and communities who may otherwise have limited support.