According to experts, the bite of a Lone Star tick can lead an individual to develop a sensitivity or allergy to alpha galactose, a carbohydrate found in red meat and dairy products. The Centers for Disease Control and Prevention says AGS can cause hives, nausea, stomach pain, breathing issues and swelling.
Man died several hours after eating hamburger at barbecue
According to researchers, a 47-year-old New Jersey man went on a camping trip with his wife and children in summer 2024, and after spending the day outdoors, they had beef steak for dinner. About four hours later, researchers say the man experienced severe abdominal discomfort, diarrhea and vomiting that lasted about two hours.
The man apparently felt better the following morning, but when discussing what had happened with his family, he allegedly said, “I thought I was going to die.” However, he decided not to consult a doctor about the symptoms, researchers say.
About two weeks later, researchers say the man attended a barbecue where he ate a hamburger. About four hours after eating, the man was found unconscious on the bathroom floor with vomit around him. He was taken to a local hospital, where he was pronounced dead several hours later.
The man’s name was not released, nor was the location he went camping.
Postmortem blood test reveals allergic reaction to alpha-gal
The man’s death was ruled a “sudden unexplained death,” but his wife asked a friend in the medical field to review the autopsy report. The doctor contacted researchers in Virginia to look into the possible role of AGS.
Earlier this year, the man’s blood was tested, and researchers say it was determined he had suffered an allergic reaction to alpha-gal consistent with fatal anaphylaxis.
The man’s wife said that earlier in the summer, he had gotten about a dozen bug bites around his ankles believed to be from Lone Star tick larvae.
According to researchers, this is “the first documented anaphylactic death related to AGS where the symptoms started several hours after consuming mammalian meat.”
Doctors want to raise awareness of alpha-gal syndrome
The researchers argue more public education on AGS is necessary, considering the increased presence of Lone Star ticks in northern states and the fact that abdominal pain is not widely recognized as a possible symptom of an allergic reaction.
“Although this is very, very uncommon– what happened to him is not likely to happen to other people. I’m not afraid of that,” said Dr. Thomas Platts-Mills with UVA Health. “But they should know about it.”
“If they start noticing they’re developing abdominal pain, rashes after eating red meat, they should talk to their physicians about the possibility that they’ve been sensitized to this specific carbohydrate within red meat,” said Dr. Suraj Saggar, chief of infectious disease at Holy Name Medical Center in Teaneck, “and understand that if they continue to eat it, there is at least the potential for having a very serious and even fatal reaction.”
Experts say people who live in areas where Lone Star ticks are common, like New York and New Jersey, should do what they can to avoid tick bites.
“With the changing seasons, the warming of our climate, these ticks are increasing in their numbers. The potential exposures are increasing,” Saggar said. “People should take all the precautions they can to protect [from] tick bites.”
Biologist Charles Darwin began crafting his theory of evolution on a trip to the Galapagos Islands, where he discovered animals had developed unique traits that varied from island to island. Nearly two centuries later, on a different island, scientists aren’t just observingevolution, they now have the technology to shapeit. This past year, we met a team of modern-day Darwins on Nantucket, where they’re hoping to use genetic engineering to reduce the transmission of Lyme disease, a tick-borne illness found primarily in the Northeast and Upper Midwest, but also throughout the United States. The scientists’ target may surprise you. It’s not the deer often associated with the disease, or even the ticks, but wild mice, the main carriers of Lyme. It’s a first-of-its-kind approach, where scientists and locals are working together to decide whether to sculpt evolution.
Thirty miles off the coast of Cape Cod, Massachusetts, is the island of Nantucket: a 14-mile-long, 3-mile-wide oasis known for its natural beauty, pristine shorelines, and protected landscape.
But hidden is a scourge that’s afflicted 15% of its residents.
Kevin Esvelt: The natural disaster in our area is not hurricanes, or tornadoes, or earthquakes; it is Lyme disease. It is the one plague that might be severe enough that communities might want to engineer a wild organism in order to get rid of it, or, at least, reduce the level, a lot.
Last October, deep in the island’s brush, we found MIT associate professor Kevin Esvelt, a pioneer in genetic engineering, waving a white flag in search of ticks.
A tick
60 Minutes
These tiny vectors of Lyme disease were not hard to find.
Kevin Esvelt: These are the big ones because these are largely adults.
Jon LaPook: If the adults are this small, imagine the tiny, tiny what are they called, nymphs?
Kevin Esvelt: Nymphs, yeah. We often think of poppy-seed sized.
Esvelt’s collaborator is Sam Telford:, an epidemiologist at Tufts University who’s been studying ticks on Nantucket for the last 40 years.
Sam Telford: There’s a 50% chance, maybe more, that this is actually carrying Lyme disease.
Jon LaPook: But you’re not afraid because it has to be embedded–
Sam Telford: It has to be attached–
Jon LaPook: –and attached–
Sam Telford: –for– for more than 24 hours.
Jon LaPook: Right, to– to infect you.
Sam Telford: That’s correct.
Sam Telford: These guys will swell up 50 to 100 times that size with blood. You know, it becomes that– that big.
Jon LaPook: And that’s how you know when they’re engorged you know that they’ve been feeding on you.
Sam Telford: If you see it that big, then you’re in trouble.
The scientists aren’t here just to collect ticks; they’re interested in this critter.
Jon LaPook: This is a wild mouse?
Sam Telford: This is a wild white-footed mouse.
Jon LaPook: And you’ve tagged it?
Sam Telford: I’ve tagged it. So when I come back in April or May of next year, we get an idea of what over-wintering success is.
Dr. Jon LaPook with Sam Telford and Kevin Esvelt
60 Minutes
Telford is tracking the mouse population on Nantucket as part of a novel project. The scientists want to use genetic engineering to interrupt a cycle of infection necessary for Lyme disease to flourish.
White-footed mice are the main host of Lyme bacteria. When an uninfected tick bites an infected mouse, the bacteria transfer to the tick. When that infected tick then bites an uninfected mouse, the cycle continues.
Deer don’t get infected but they help spread the disease because ticks embed on them to feed, then reproduce, with a single female tick laying as many as 2,000 eggs.
Here’s Esvelt and Telford’s big idea: change the genetic makeup of the mice so they’re immune to Lyme. That way, the ticks that bite them won’t get infected.
Jon LaPook: You don’t have to kill the mouse in order to interrupt the cycle?
Sam Telford: It’d be so much more economical and straightforward to just go out and poison all the mice, right, get rid of the mice. But then there’s a whole food chain that might depend on these mice that would be impacted.
Kevin Esvelt: The dream is that we can use new technologies to ensure that wild creatures can live in peace, playing their normal ecological role, but without causing disease that make people suffer.
If Esvelt’s dream becomes a reality, 80-year-old Dr. Timothy Lepore might finally be able to retire.
Over the past 40 years, he’s been the island’s emergency room head, sole surgeon, even its medical examiner. Today, Dr. Lepore runs the only private practice on Nantucket, where he treats dozens of patients with Lyme disease each year.
And yes, that’s a giant tick in his waiting room.
Dr. Timothy Lepore: Being in private practice, it is– while not well-paid– it’s–
Jon LaPook: You get paid in, like, what, chickens and doughnuts and–
Dr. Timothy Lepore: We prefer lobsters, actually–
Jon LaPook: Lobsters.
Dr. Timothy Lepore: Lobsters, clams–
Jon LaPook: B–
Dr. Timothy Lepore: –and scallops.
Jon LaPook: But you’ll take– you’ll take anything, right?
Dr. Timothy Lepore: I will take anything.
Dr. Timothy Lepore
60 Minutes
Lyme disease can be treated with antibiotics, but if left untreated, the infection can spread to the heart, joints, and nervous system, as it did for 33-year old Shauna Asplint.
Shauna Asplint: My body hurts all the time.
Dr. Timothy Lepore: Okay.
Shauna Asplint: I don’t know if that’s from my Lyme’s disease, or what. My neck is stiff, my ankles are sore, and my hips.
Asplint was first diagnosed with Lyme when she was 10 years old. A few years later, the left side of her face stopped moving, a residual effect from the disease is still noticeable today.
Dr. Timothy Lepore: Let’s see you smile.
Shauna Asplint: It’s a little off, and then if–
Dr. Timothy Lepore: Yeah, no. It’s very nice.
Shauna Asplint: –raise my eyebrows, it just doesn’t move.
Dr. Timothy Lepore: We see people with facial palsies. We see little kids with swollen knees. We see people with Lyme rashes. So it alters people’s behavior and activities.
The problem on Nantucket can be traced back to 1926, when locals voted to import two female deer to the island to give a lone buck company. As the deer population grew, so did the ticks’.
On top of that, by the 1950s, half the land on the island was put into conservation. The untamed brush and wild grasslands create an ideal ecosystem for Lyme’s hosts to thrive.
Kevin Esvelt: We have a problem with tick-borne disease because we engineered the environment to maximize the number of ticks and maximize the number of mice that are the best hosts of Lyme disease. And it came back and bit us, literally.
A trip at age 11 to the Galapagos Islands sparked Esvelt’s lifelong obsession with evolution. In 2013, he was the first to propose that CRISPR, a revolutionary technology that enables scientists to edit DNA, could be used to change a species’ genetics in perpetuity, hacking the laws of inheritance.
Kevin Esvelt
60 Minutes
This idea led to the project they call “Mice Against Ticks” in the Sculpting Evolution lab Esvelt runs at MIT.
For the last nine years, he and researcher Joanna Buchthal have been studying whether they could add a gene for an antibody that prevents Lyme infection to a mouse embryo that, as we see here, has progressed into two cells.
Jon LaPook: Is it gonna be into one of those cells or both of them?
Joanna Buchthal: So our technique involves injecting both cells to maximize the likelihood that we get the antibody gene in their DNA.
Buchthal and embryologist Zach Hill showed us how they genetically engineer lab mice.
Joanna Buchthal: He’s gonna actually inject through the plasma membrane, and into the nucleus for both of these cells.
Jon LaPook: How are you at darts?
Zach Hill: Not very good.
Jon LaPook: But you’re gonna hit the–the center of this…
Zach Hill: A lot better at this, yeah–
Zach Hill: Okay. So I already have an embryo set up on the– on the dish here.
Zach Hill: So I’m just trying to find the nucleus here
Jon LaPook: It is amazing to see this.
Zach Hill and Joanna Buchthal show Dr. LaPook their technique
60 Minutes
Joanna Buchthal: So that little burst that you can see in the nucleus in– is when he’s actually injecting the genome engineering tools directly into the nucleus where the DNA is.
The injection mix contains both the antibody gene and CRISPR, which acts like molecular scissors. After CRISPR finds and cuts the targeted area of DNA, the cell inserts the gene into the mouse’s genetic code. When this mouse is born, it will be immune to Lyme disease, and so will its children.
Jon LaPook: If I get a polio vaccine my kids aren’t gonna be immune to polio unless they get the vaccine too.
Joanna Buchthal: That’s exactly right. So this is a heritable immunization.
Jon LaPook: What do you mean by that?
Joanna Buchthal: What we’re actually doing is we’re encoding immunity so that that immunity is passed on generationally. And every mouse that gets the antibody gene is actually immune.
Jon LaPook: Typical, standard evolution happened very slowly, right, over thousands // maybe millions of years. Are you speeding up evolution here?
Kevin Esvelt We are absolutely speeding up evolution. And that’s precisely why we have to be careful, because we are doing things that couldn’t happen naturally.
The plan is to release thousands of engineered mice on Nantucket over time, starting during the winter months, when the native mouse population is low. But first, Esvelt needs community buy-in.
He chose Nantucket, not only for its high rate of Lyme, but also for its tight-knit, well-educated community, with a tradition of town hall democracy.
We saw this in action last fall when, for the 10th time, the scientists presented their latest findings to locals…
Joanna Buchthal: So it appears that we have, indeed, produced the first heritably Lyme-immune laboratory mice capable of breaking the disease transmission cycle.
…followed by a public Q&A.
Resident 1: We have a huge population of field mice here. Shall we expect a larger population?
Resident 2: Having had Lyme disease twice, I thought “what a cool idea.” But mice are kinda the foundation of the food chain. So tinkering with the food chain makes me a little cautious.
Resident 3: How long before it’s actually gonna take effect and keep me from getting Lyme disease again?
Jon LaPook: When you’re in these meetings//what’s that been like?
Kevin Esvelt: Some people are really gung ho about this. Some people have deep reservations. But what I found heartening about this and Nantucket, in particular, is that pretty much everyone agrees that this is how we should go about developing these kinds of technologies, that it should not just be scientists in their laboratories get a clever idea and then, boom, it’s there.
Dr. Timothy Lepore says he’s supportive of the proposal. But as an avid falconer, he wants more testing to be done to ensure there won’t be unintended consequences to the island’s ecosystem.
Jon LaPook: Could a change in– in the field mouse lead to a change in the hawk?
Dr. Timothy Lepore: Well, that’s the question. I don’t think so.
Jon LaPook: But we don’t know–
Dr. Timothy Lepore: But I think that has to be shown.
Jon LaPook: Do you worry about fooling around with mother nature?
Kevin Esvelt: Absolutely. But, on the other hand, I’m not terribly fond of mother nature, if she’s gonna give my kids disease. All of technology is saying to mother nature, “You’re beautiful. And we appreciate you very much and we need to conserve you. But we’re not always happy with the way things work, naturally. And so we’re going to change it.”
Jon LaPook: But in this case, you’re changing the environment for everybody.
Kevin Esvelt: This is, I agree, different because it’s hard for individuals to opt out. And I think that means we need to do the science differently because we need to ensure that people have a voice, early enough, to actually influence the direction that the technology is developed.
If federal and state regulators agree, the team plans to first release the engineered mice in a small field trial on a private island, so they can better understand the ecological impacts before any potential experiments on Nantucket.
Jon LaPook: What is the home run for you?
Kevin Esvelt: I think it’s a field trial that works, it’s something that allows us to dramatically reduce the– the fraction of ticks that are infected, that doesn’t have anything obviously go wrong with the ecosystem. And then the community has a good discussion and then they decide. And I think there’s benefits as we discussed even if they say no. And then we walk away.
Produced by Katie Brennan and Denise Schrier Cetta. Associate producer, Grace Conley. Edited by Aisha Crespo.
Jon LaPook, M.D. is the award-winning chief medical correspondent for CBS News. Since joining CBS News in 2006, LaPook has delivered more than 1,200 reports on a wide variety of breaking news and trending stories in the health and medical fields, as well as feature stories on music, lifestyle and profiles of entertainment stars.
The U.S. Centers for Disease Control and Prevention is warning travelers to Baja California, Mexico, about Rocky Mountain spotted fever, a potentially fatal bacterial disease that spreads through the bite of an infected brown dog tick, which can be carried by pets.
The warning comes after a San Diego, California, resident who traveled to Baja California died last month after contracting the disease, San Diego County Public Health Services reported.
In addition to Baja California, RMSF has been found in the Mexican states of Sonora, Chihuahua, Coahuila and Nuevo León.
In the level 1 travel advisory issued Friday, the CDC urged travelers who develop symptoms of RMSF during travel, or within two weeks of returning to the U.S., to seek medical attention.
Symptoms of RMSF include fever, headache, and rash, which can develop two to four days after the onset of symptoms, according to the CDC.
The disease can progress quickly in infected patients and can become deadly if not treated early with the antibiotic doxycycline. Children under 10 years of age are five times more likely to die from RMSF, the CDC said.
San Diego County public health officials said the last time someone from San Diego died from RMSF was in 2014.
Experts say ticks are out earlier this year and sticking around longer than usual thanks to warming temperatures — making it more important than ever to be aware of how to avoid their potentially disease-carrying bites.
In Connecticut, for example, ticks are already showing up in greater numbers this year, Goudarz Molaei, a tick expert for the state, told The Associated Press. Since Jan. 1, more than 1,000 ticks have been sent in for the state’s testing program, the second-highest number in recent years.
“It’s going to be an above-average year for tick activity and abundance,” Molaei warned.
To help you prepare, here’s what you should know about protecting yourself:
Which ticks carry Lyme disease?
Lyme disease is caused by borrelia bacteria, which humans usually contract from the bite of a tick carrying the bacteria.
Ticks that can carry borrelia bacteria live throughout most of the United States, though Lyme disease is most common in the upper Midwest and the northeastern and mid-Atlantic states.
An estimated 476,000 Americans are diagnosed with Lyme disease each year, according to the Centers for Disease Control and Prevention.
Different types of infected ticks can spread other bacteria, viruses and parasites that make people sick. For example, black-legged ticks, also called deer ticks, can carry more than Lyme-causing bacteria. They can also spread babesiosis, anaplasmosis and Powassan virus disease.
What do tick bites look like?
A tick bite may look like a “tiny, itchy bump on your skin” similar to a mosquito bite, according to the Mayo Clinic. But some people may not even notice they’ve had a tick bite.
Being bitten doesn’t necessarily mean you have a tick-borne disease. However, if the tick was carrying the bacteria that causes Lyme disease, early symptoms usually happen within 3 to 30 days after a bite, the Mayo Clinic explains.
A bull’s-eye-shaped rash is a common sign, Bryon Backenson, an assistant professor at the University of Albany School of Public Health, recently told CBS News.
“It’s a rash that doesn’t always look just like a bull’s-eye, but it’s a red patch. It’s relatively large, usually at least 2 inches or so across,” he explains. “Oftentimes it doesn’t hurt or itch, it’s just there.”
What are the symptoms of Lyme disease? Is there a treatment?
Early symptoms of a Lyme disease infection may include:
headache
fatigue
muscle aches
joint aches or stiffness
chills
fever
swollen lymph nodes
“Early diagnosis and proper antibiotic treatment of Lyme disease is important,” the CDC advises. “Patients treated with antibiotics in the early stages of the infection usually recover rapidly and completely.” However, the health agency notes some people may experience lingering symptoms, and that more research is needed on the disease.
Without treatment, the Mayo Clinic warns the illness can get worse, with more severe symptoms developing over a period of several weeks or months.
There is no Lyme vaccine on the market for people in the U.S., but one is being tested.
Does bug spray work on ticks?
There are several methods to protect yourself from ticks, both before you go outside and once you return indoors. Here are some expert tips:
Know where to expect ticks: “Ticks live in grassy, brushy or wooded areas, or on animals. Spending time outside walking your dog, camping, gardening or hunting could bring you in close contact with ticks,” the CDC says, adding many people get ticks from their own yard or neighborhood.
Wear long-sleeved clothing: “It’s easier said than done, of course, when it’s really warm out,” Backenson admits. He says lighter-colored clothing can also help you more easily spot the small parasites. Also consider wearing long pants tucked into your socks in tick-infested areas.
You can also pre-treat your clothing. For example, Backenson suggests treating things like your gardening shoes and hiking gear. The CDC recommends using products containing 0.5% permethrin, which can remain protective through several washings.
Once home, take a shower: The CDC says showering within two hours of coming indoors has been shown to “reduce your risk of getting Lyme disease and may be effective in reducing the risk of other tickborne diseases.” Showering can also help wash off unattached ticks.
Do a tick check: “If you check yourself every 24 hours when you’re getting into the shower… you can really find these ticks and pull them off,” Backenson says.
During tick checks, the CDC advises looking in spots that ticks can hide, including:
under the arms
in and around the ears
inside the belly button
behind the knees
between the legs
on the hairline and scalp
Having someone help check your back and scalp, where you might have trouble seeing yourself, is also a good idea.
What are the best ways to kill ticks?
Worried you’re bringing ticks inside via your clothes?
Putting your outdoor clothes in a hot dryer for about 10 minutes is “enough to kill a tick,” Backenson says.
If you find a tick on you, you’ll want to remove it quickly and correctly.
“Don’t wait to have it removed,” Backenson says. “With a fine-point pair of tweezers, get as close to the skin as you possibly can and gently and firmly pull straight up and that tick will pop right out.”
After removing the tick, the CDC suggests cleaning the bite area and your hands with rubbing alcohol or soap and water.
You should also never crush a tick with your fingers. Instead, the CDC says to dispose of a live tick by putting it in alcohol, putting it in a sealed bag, wrapping it tightly in tape or flushing it down the toilet.
Lastly, keep an eye on the area. If symptoms occur, see a doctor.
