We have completed maintenance on DiscoverMagazine.com and action may be required on your account. Learn More

450,000 Americans May Have A Meat Allergy Caused By Tick Bites

The CDC reports that cases of alpha-gal syndrome have spiked in the U.S. Find out how saliva from lone star ticks can cause permanent problems at the dinner table.

By Joshua Rapp Learn
Sep 14, 2023 3:00 PM
Up close view of a lone star tick on a leaf
(Credit: Jay Ondreicka/Shutterstock)

Newsletter

Sign up for our email newsletter for the latest science news
 

A single bite from a tick can cause a permanent allergy to pork, beef and other kinds of red meat.

This condition is increasing in the United States, with a jump in positive test cases from 2017 to 2021, according to the U.S. Centers for Disease Control and Prevention (CDC). According to the CDC, as many as 450,000 people in the U.S. have been estimated to have been infected with alpha-gal syndrome, which can cause an assortment of symptoms when they eat red meat.

The connection between a tick bite and a meat allergy might seem baffling at first. How is it possible that a bite from such a small creature can ruin a lifetime of barbecues? Scientists suspect that it has to do with special sugar molecules found in lone star tick saliva, which humans don’t carry — but most other mammals do.

Where Are Lone Star Ticks Found?

The range of the lone star tick stretches from roughly the eastern half of Texas, up to Nebraska, then across southern Maine and back down to Florida, encompassing a huge portion of the lower 48 states. It’s also found in parts of Mexico, and occasionally reported in Canada.

0 free articles left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

0 free articlesSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!

Subscribe

Already a subscriber?

Register or Log In

Stay Curious

Sign up for our weekly newsletter and unlock one more article for free.

 

View our Privacy Policy


Want more?
Keep reading for as low as $1.99!


Log In or Register

Already a subscriber?
Find my Subscription

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Copyright © 2024 Kalmbach Media Co.