CHARLOTTESVILLE, Va. — University of Virginia researchers have published a case report describing what they believe is the first well-documented death from alpha-gal syndrome after a healthy 47-year-old New Jersey man collapsed about four hours after eating beef in 2024. The authors say the fatal, delayed reaction shows how a tick-triggered allergy can be missed until it is too late, Dec. 28, 2025.
Alpha-gal syndrome is a potentially life-threatening allergy that can develop after some tick bites, according to the Centers for Disease Control and Prevention. The trigger is alpha-gal, a sugar found in most nonprimate mammal meat and some mammal-derived products, and reactions may start hours after exposure — a delay that can obscure the link to food.
What the UVA case adds to alpha-gal syndrome awareness
UVA researchers said the man’s death was initially reported as sudden and unexplained after an inconclusive autopsy. A later review by UVA allergy specialist Thomas A.E. Platts-Mills focused on whether alpha-gal syndrome could explain the timing and symptoms described by the family, according to a summary from UVA School of Medicine.
The team obtained post-mortem blood samples and found evidence the man had been sensitized to alpha-gal, with lab findings consistent with fatal anaphylaxis. The case was published as a Journal of Allergy and Clinical Immunology: In Practice report with co-authors from UVA and Hackensack Meridian Health.
The timeline, as described by the researchers, began during a summer camping trip when the man ate a late steak dinner around 10 p.m. He woke at about 2 a.m. with severe abdominal pain, diarrhea and vomiting, then recovered by morning. Two weeks later, still unaware he had alpha-gal syndrome, he ate a hamburger at a barbecue and developed illness several hours later; his son later found him collapsed in a bathroom.
Platts-Mills urged the public to take delayed, intense stomach pain seriously: “severe abdominal pain occurring 3 to 5 hours after eating beef, pork or lamb should be investigated as a possible episode of anaphylaxis.” The researchers also noted possible cofactors — including alcohol, exercise and seasonal pollen exposure — that may influence how strongly alpha-gal syndrome presents.
alpha-gal syndrome and a growing footprint for the lone star tick
Most U.S. cases are associated with the lone star tick, which is now widely distributed across parts of the Northeast, South and Midwest, according to CDC lone star tick surveillance. That reach matters because sensitization can follow bites that people dismiss as minor — including small, itchy bites sometimes attributed to “chiggers.”
In a 2023 CDC analysis of commercial blood testing, researchers documented 110,229 suspected alpha-gal syndrome cases in the United States during 2010-2022 and estimated that 96,000 to 450,000 people may have been affected since 2010, based on likely underdiagnosis and uneven access to clinicians familiar with the condition, according to a Morbidity and Mortality Weekly Report study.
A pattern scientists have been tracking for more than a decade
The fatal case lands on a long research timeline for alpha-gal syndrome. A 2011 study that helped tie tick bites to alpha-gal antibodies in patients was published in The Journal of Allergy and Clinical Immunology. As clinicians began comparing notes across regions, Science magazine’s 2012 coverage drew early attention to an unusual red-meat allergy marked by delayed symptoms and confusing, late-night reactions.
By 2013, researchers were detailing the delayed meat reaction and its connection to alpha-gal in a widely cited clinical review — work that helped explain why alpha-gal syndrome can masquerade as food poisoning, especially when hives or breathing symptoms are absent early.
Health officials stress tick bite prevention and medical evaluation for recurring, unexplained reactions. Anyone with symptoms of anaphylaxis — including swelling, hives, severe abdominal pain, vomiting, dizziness or trouble breathing — should seek emergency care, and people who suspect alpha-gal syndrome should talk with a health care provider about testing and management.
