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The Lone Star Tick Is Moving North: What It Could Mean for Washington Ranchers

written by

Skagit Meat Co

posted on

August 7, 2026

Why Northwest Washington livestock producers should be watching an expanding tick

For generations, Washington ranchers have dealt with ticks as part of working livestock and managing pasture.

But a different tick is getting increasing attention across the United States.

It is called the Lone Star tick (Amblyomma americanum), named for the distinctive white spot found on the back of the adult female.

Historically associated with the southeastern and south-central United States, the Lone Star tick has demonstrated the ability to expand its geographic range. Researchers are now studying its movement, host-seeking behavior, and ability to survive under different environmental conditions.

That raises an important question for Washington cattle producers:

Could the Lone Star tick become a problem in Washington?

The answer today requires some nuance.

According to the Washington State Department of Health, the Lone Star tick is not native to Washington, and neither the Lone Star tick nor the black-legged tick that transmits ehrlichiosis is considered established in the state. Washington has not reported a human case of ehrlichiosis acquired within the state, and bacteria that cause ehrlichiosis have not been detected in ticks collected in Washington.

So this isn't a story about a tick that has suddenly taken over Washington.

It is a story about why ranchers should pay attention to changing tick distributions before a problem becomes established.

Washington Already Has Ticks

It is important to begin with what we already know.

Ticks are common throughout Washington State.

The Washington State Department of Health tracks tick species submitted by the public and uses those submissions to better understand where different species occur and how tick activity changes over time.

Washington's existing tick concerns include species such as the western black-legged tick, western dog tick, and Rocky Mountain wood tick.

The western black-legged tick (Ixodes pacificus) is particularly important in western Washington. It can transmit Lyme disease and anaplasmosis, and it occurs in western Washington and along the eastern slopes of the Cascades.

In other words, Washington ranchers don't need to wait for the Lone Star tick to think about tick management.

Ticks are already part of the agricultural landscape.

The question is whether additional species could establish themselves as environmental conditions and host populations change.

Why Is the Lone Star Tick Getting Attention?

The Lone Star tick is different from many of the ticks people are accustomed to encountering.

It is a highly mobile, aggressive host-seeking tick.

Rather than simply waiting on vegetation for a host to brush past, Lone Star ticks can actively move in search of a host.

That behavior is receiving significant scientific attention.

A 2025 Washington State University doctoral dissertation examined the movement, detection, abundance, and environmental factors affecting Amblyomma americanum. The research found that Lone Star ticks can be highly mobile and that temperature and previous environmental conditions influence their host-seeking behavior and detection.

That matters because a tick doesn't need to be sitting in one location waiting for cattle to walk through.

It can move.

And its hosts move even farther.

Cattle Are Part of the Equation

A ranch is an ecosystem.

Cattle interact with pasture.

Deer move through fence lines.

Coyotes, rodents, birds, dogs, and other wildlife move across the landscape.

People travel between properties.

Livestock are bought, sold, transported, and moved between states.

All of these movements create opportunities for parasites to encounter new hosts.

The Lone Star tick has a broad host range, and cattle can serve as hosts.

That makes the species relevant to livestock producers even if its primary importance in a particular region is not yet established.

The Deer Connection

One animal deserves particular attention:

the white-tailed deer.

Deer are important hosts in Lone Star tick ecology.

This illustrates why controlling ticks is not simply a matter of treating cattle.

You can treat a herd and still have ticks in the surrounding environment.

Wildlife can continue moving through the same pasture.

This is why a long-term tick strategy requires attention to the entire ranch landscape.

What Could Heavy Tick Pressure Do to Cattle?

Ticks are parasites.

They feed on blood and can cause irritation and stress.

When tick burdens become substantial, the effects can extend beyond a nuisance.

Potential consequences include:

  • Blood loss
  • Skin irritation
  • Stress
  • Reduced body condition
  • Reduced weight gain
  • Increased susceptibility to secondary problems
  • Increased labor
  • Increased parasite-control expenses
  • Transmission of certain pathogens

The economic importance of ticks is therefore not necessarily tied to one dramatic disease outbreak.

Sometimes the economic impact comes from many smaller losses accumulating over an entire production season.

For a cattle producer operating on narrow margins, that matters.

The Washington Climate Question

Could Washington's environment support the Lone Star tick?

That is precisely the type of question scientists are investigating.

Researchers at Washington State University have studied the Lone Star tick's response to temperature and environmental conditions. Their work demonstrates that temperature history can affect tick behavior and detection.

But it would be a mistake to take that research and conclude that Washington is now experiencing a widespread Lone Star tick invasion.

We don't have evidence for that.

The responsible conclusion is more straightforward:

Changing environmental conditions make continued surveillance worthwhile.

Why Skagit Valley Should Pay Attention

Skagit Valley is an agricultural landscape unlike many parts of Washington.

It contains:

  • Dairy farms
  • Beef cattle operations
  • Pasture
  • Cropland
  • Woodlands
  • Wetlands
  • River corridors
  • Wildlife habitat
  • Rural residential development

That combination creates a complicated interaction between livestock, wildlife, vegetation, and people.

For cattle producers, the practical lesson isn't to start treating every pasture for Lone Star ticks.

It is to know what is already present.

If an unusual tick appears on cattle, dogs, wildlife, or people, identifying the species can help determine whether something unusual is occurring.

Ranchers Can Become the Early Warning System

This is where farmers and ranchers can make a real contribution.

Researchers cannot be everywhere.

But ranchers are.

They are checking cattle every day.

They are repairing fences.

They are walking pastures.

They are moving livestock.

They are working around brush and timber.

They are seeing wildlife.

That makes agricultural producers an important source of information about changes in parasite populations.

The Washington State Department of Health specifically encourages people to submit ticks for identification because doing so helps track species distribution and seasonal activity.

If you find an unfamiliar tick, don't automatically throw it away.

Save it. Photograph it. Record where you found it.

Those simple actions can provide useful information.

What Should a Washington Rancher Look For?

The adult female Lone Star tick has one of the easiest identifying characteristics among common tick species:

A single white spot on its back.

But appearances can be deceptive, particularly with immature ticks.

If you aren't certain what species you have found, don't rely on a quick internet search.

Have it identified.

The Washington State Department of Health accepts ticks for species identification and provides instructions for submitting specimens.

A Simple Ranch Tick-Surveillance Program

A ranch doesn't need a laboratory to start paying attention.

A simple observation program can begin with four steps.

1. Inspect the cattle

During normal handling, look for ticks around:

  • Ears
  • Neck
  • Shoulders
  • Tailhead
  • Flank
  • Groin
  • Udder
  • Other areas where ticks may attach

2. Check working dogs

Dogs can encounter ticks while traveling through pasture, brush, and wildlife habitat.

3. Watch wildlife activity

Pay particular attention to areas where deer concentrate.

4. Document unusual findings

Record:

  • Date
  • Location
  • Animal
  • Number of ticks
  • Photograph
  • Approximate size
  • Whether the tick was attached

That information can become valuable if unusual tick activity appears repeatedly.

Don't Overreact

There is an important difference between surveillance and panic.

Finding one unfamiliar tick does not mean a new tick population has established itself.

Likewise, finding a Lone Star tick does not automatically mean that a person or animal has contracted a disease.

The Washington Department of Health currently reports that ehrlichiosis has not been acquired locally in Washington and that ehrlichiosis-causing bacteria have not been detected in ticks collected in the state.

That is good news.

But it is also a reason to continue watching.

Early detection is much easier than dealing with an established parasite population.

What About Alpha-Gal?

The Lone Star tick has also become widely known because of its association with alpha-gal syndrome, a condition in which some people develop an allergy to the carbohydrate alpha-gal found in mammalian products.

This subject requires particular caution in Washington.

A 2025 CDC-published case report documented alpha-gal syndrome in a Washington resident, but the tick submitted in that case was identified as a western black-legged tick (Ixodes pacificus), not a Lone Star tick. The authors noted that the relationship between alpha-gal syndrome and tick species outside the established Lone Star range remains uncertain.

Therefore, it would be inaccurate to tell Washington consumers that Lone Star ticks are responsible for a growing local alpha-gal problem.

The science is more complicated than that.

The Bigger Agricultural Lesson

The Lone Star tick illustrates something larger about modern agriculture:

The biological boundaries of our farms are not the same as our fence lines.

Parasites don't recognize property boundaries.

Wildlife doesn't recognize county lines.

Ticks don't care whether a field belongs to a cattle rancher, dairy farmer, timber company, or homeowner.

And livestock movement connects agricultural communities across state lines.

That means biosecurity isn't simply about keeping diseases out of the herd.

It is also about understanding what is happening in the surrounding ecosystem.

Good Ranch Management Includes Observation

The best defense against emerging agricultural problems is often not a complicated technology.

It is observation.

Know your cattle.

Know your pasture.

Know the wildlife that moves through it.

Know what parasites are normally present.

And pay attention when something changes.

The Lone Star tick may or may not become an established agricultural concern in Washington.

Right now, there is no evidence that it has become widespread here.

But its changing distribution elsewhere and the continued research into its biology give ranchers a good reason to keep watching.

Keep an Eye on the Pasture

The Lone Star tick isn't a reason to panic in Skagit Valley.

It is a reason to pay attention.

Washington already has a diverse tick population, and the state maintains surveillance because different tick species carry different risks.

For cattle producers, the best approach is simple:

Inspect. Identify. Document. Report.

If an unusual tick shows up on cattle, a dog, wildlife, or yourself, don't dismiss it.

Take a picture.

Save the specimen when practical.

Record where it was found.

And have it properly identified.

Agricultural producers are often the first people to notice changes in the landscape.

That makes every rancher part of Washington's early-warning system.

The Lone Star tick may be moving north.

Whether it ever becomes established in Washington remains to be seen.

But the time to start watching is before it becomes a problem—not after.

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When Americans purchase locally raised beef, they are supporting a supply chain with a shorter geographic path between ranch, processor, retailer, and consumer. That doesn't mean imported beef is inherently unsafe. USDA inspection and import controls exist precisely to manage those risks. But a strong domestic cattle industry provides something more than food. It provides redundancy. If one part of the national or international supply chain experiences a disruption, regional producers and processors become increasingly important. That is why investments in American cattle production and regional USDA-inspected processing facilities matter. A resilient food system is not dependent upon a single source of cattle, a single processing region, or a single international supply chain. The Question of Mexican Beef vs. Mexican Cattle There is an important distinction that often gets lost in the public conversation. Imported beef is not the same thing as imported live cattle. The current USDA announcement concerns the phased reopening of ports for live cattle and other livestock, not simply a blanket reopening of the U.S. market to Mexican beef. Live animals present a different biosecurity consideration because a live animal can potentially carry an external parasite into the United States. That is why the screwworm issue is directly relevant to the cattle-border decision. What Should Ranchers Watch For? American cattle producers should become familiar with the signs of New World screwworm. The most important warning sign is an animal with a wound that appears unusual or progressively worsens. Watch for: Unexplained woundsWounds that enlarge rather than healPersistent irritationBlood or dischargeUnusual odorVisible larvaeAnimals repeatedly licking or rubbing a woundSudden decline in an otherwise healthy animal Screwworm larvae live in the wound and can cause severe tissue damage. If a rancher encounters a suspicious case, do not assume it is an ordinary flystrike or wound infection. Contact a veterinarian or appropriate animal-health authority promptly. Early detection is critical. Wound Management Becomes More Important One of the simplest defenses against screwworm is also one of the most basic principles of good cattle management: Take care of wounds. Any open wound provides an opportunity for flies. That means ranchers should pay particular attention after: BrandingCastrationDehorningCalvingVeterinary proceduresInjuriesPredator attacksFencing accidents Good wound care is not a substitute for national screwworm surveillance. But it is an important part of livestock biosecurity. What Happens If Screwworm Establishes? This is the question that should concern the cattle industry most. There is a major difference between: an imported animal carrying a parasite that is detected and eliminated and a self-sustaining population becoming established in the United States. The first is an outbreak-control problem. The second becomes a permanent agricultural-management problem. That distinction is why American ranchers have a legitimate interest in aggressive surveillance and rapid response. Border Security Is Livestock Security The debate surrounding the border is often framed in political terms. For cattle producers, however, there is another way to look at it. The border is also a biological barrier. It protects American agriculture from pests and diseases that may not yet be established here. That doesn't mean the border must remain permanently closed. Trade is important. Mexico is an important cattle-trading partner. But reopening livestock trade requires confidence that the inspection, surveillance, treatment, and eradication systems are strong enough to protect American agriculture. That is the standard ranchers should demand. The Goal Should Be Trade and Biosecurity The choice does not have to be: "Open the border" versus "protect American cattle." The better goal is: Open trade when it can be done without compromising livestock health. That requires transparency. It requires measurable standards. It requires rapid reporting. It requires adequate inspection personnel. It requires sufficient sterile-fly production. It requires cooperation between USDA, Mexican animal-health authorities, state veterinarians, livestock organizations, and individual producers. And it requires the ability to stop or restrict trade again if conditions deteriorate. American Ranchers Should Not Be Asked to Carry the Risk Alone If the United States resumes cattle imports while New World screwworm remains active in Mexico, the risk-management system must be strong enough to protect the producers who have spent generations building American cattle herds. That means producers should expect: Transparent reporting of detectionsStrong inspection protocolsRapid response to suspicious animalsAdequate federal fundingContinued sterile-fly productionEffective Mexican surveillanceClear movement requirementsState-level preparednessProducer education The cost of prevention is almost always easier to bear than the cost of eradication after establishment. The Lesson for Northwest Washington For ranchers in Washington, New World screwworm may seem like a distant Texas or Mexican problem. It isn't. It is a reminder that agricultural biosecurity is national. A pest that moves into one state can eventually affect livestock markets across the country. And the best defense begins long before a problem reaches your pasture. Know your cattle. Inspect your animals. Treat wounds promptly. Know what normal looks like. Report unusual cases. And stay informed about changes in livestock movement regulations. Protecting the American Herd The American cattle industry has spent generations building one of the world's most productive beef systems. That system depends on healthy animals. It depends on healthy pastures. It depends on functioning markets. And it depends on keeping devastating livestock pests outside our production systems whenever possible. The reopening of the Mexican cattle trade may provide important benefits to the U.S. cattle supply chain. But it also comes with a responsibility: Trade must not outrun biosecurity. The New World screwworm outbreak is a reminder that livestock health can change quickly when biological barriers fail. 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The Nutrient Density Debate: Why Beef Remains One of Nature's Most Nutritious Foods

The Nutrient Density Debate: Why Beef Remains One of Nature's Most Nutritious Foods

Explore the science behind nutrient density and discover why beef remains a rich source of protein, iron, zinc, vitamin B12, and other essential nutrients in a balanced diet.Looking Beyond Calories In today's nutrition landscape, few foods generate as much debate as beef. Some view it as an essential source of high-quality nutrition, while others question its role in modern diets. Amid competing dietary philosophies, one concept has emerged as a valuable way to evaluate food choices: nutrient density. Rather than focusing solely on calories, fat content, or protein percentages, nutrient density asks a different question: How many essential nutrients does a food provide relative to the calories it contains? When viewed through this lens, beef remains one of the most nutrient-dense foods available. What Is Nutrient Density? Nutrient density refers to the concentration of vitamins, minerals, protein, and other beneficial nutrients found in a food relative to its calorie content. Highly nutrient-dense foods provide substantial nutrition without excessive calories. Examples often include:    Vegetables       Fruits       Eggs       Seafood       Dairy products       Beef and other meats The goal is not merely to eat fewer calories but to maximize nutritional value from the foods we consume. Beef's Nutritional Profile A serving of beef provides far more than protein. Beef contains significant amounts of: Complete Protein Beef contains all nine essential amino acids required by the human body. These amino acids support:        Muscle maintenance       Growth and development       Tissue repair       Immune function Because the body cannot produce essential amino acids on its own, they must come from food. Iron Beef is one of the richest natural sources of heme iron. Heme iron is particularly valuable because it is more readily absorbed than the non-heme iron found in most plant foods. Iron plays a critical role in:        Oxygen transport       Energy production       Cognitive function       Physical performance Vitamin B12 Vitamin B12 is naturally found almost exclusively in animal foods. This nutrient supports:        Nerve health       Red blood cell formation       DNA synthesis       Brain function For many individuals, beef serves as a significant dietary source of B12. Zinc Beef provides highly bioavailable zinc, a mineral involved in hundreds of biological processes including:        Immune system function       Wound healing       Growth and development       Cellular metabolism Other Important Nutrients Beef also supplies:        Selenium       Niacin       Riboflavin       Phosphorus       Choline       Vitamin B6 Many of these nutrients are frequently under-consumed in modern diets. The Bioavailability Advantage One of the most important—and often overlooked—aspects of nutrient density is bioavailability. Bioavailability refers to how efficiently the body absorbs and uses nutrients. A food may contain nutrients on paper, but if those nutrients are poorly absorbed, the practical nutritional value may be lower. For example:        Heme iron from beef is absorbed more efficiently than plant-based iron.       Vitamin B12 in beef is highly bioavailable.       Protein from beef is highly digestible and complete. This means the body can utilize a substantial portion of the nutrients beef provides. Why the Debate Exists The nutrient density debate surrounding beef often arises because nutrition is complex. Different groups may prioritize different concerns, including:        Saturated fat intake       Environmental sustainability       Animal welfare       Personal dietary philosophies       Chronic disease risk As a result, discussions about beef frequently move beyond nutrition alone. While these are important conversations, they should not obscure the nutritional contributions beef provides. Even many nutrition researchers who disagree on broader dietary patterns acknowledge that beef remains a significant source of essential nutrients. Beef and Modern Dietary Guidelines Current dietary recommendations generally emphasize balance rather than elimination. Most nutrition experts agree that healthy dietary patterns can include:        Vegetables       Fruits       Whole grains       Legumes       Dairy products       Seafood       Lean meats, including beef The key is considering overall dietary quality rather than focusing on a single food in isolation. A nutrient-dense diet is built through a combination of foods that collectively provide essential nutrition. Does Production Method Matter? An increasing number of consumers are interested not only in what they eat but how it is raised. Questions often include:        Was the animal pasture-raised?       What was it fed?       How was it managed?       Was animal welfare prioritized? Research continues to explore potential differences between production systems, including grass-fed and grain-finished beef. While nutritional differences may vary, many consumers choose locally raised beef because they value transparency, stewardship, and a direct connection to the source of their food. Quality Nutrition Starts on the Farm At Skagit Meat Co., we believe food quality begins long before it reaches the dinner table. Healthy animals, responsible land management, and thoughtful husbandry practices contribute to producing beef that families can trust. We are committed to raising animals with care while providing wholesome, nutrient-rich products that support healthy lifestyles and great meals. The Bottom Line The nutrient density debate will likely continue as nutrition science evolves. However, one fact remains clear: Beef provides a remarkable package of essential nutrients in a highly bioavailable form. It delivers complete protein, iron, zinc, vitamin B12, and numerous other nutrients that support human health and wellness. Like many foods, beef is best viewed within the context of an overall balanced diet. For those seeking nutrient-dense sources of protein and essential micronutrients, beef continues to earn its place at the table. Because when nutrition matters, it's not just about how much you eat—it's about what your food provides.

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