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Anthrax has killed over 50 animals in Wyoming — what’s the risk to people?

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Anthrax has killed over 50 animals in Wyoming — what’s the risk to people?


An outbreak of naturally occurring anthrax has killed at least 50 animals, including cattle and a moose, in Wyoming.

In a statement released Sept. 3, the Wyoming Livestock Board confirmed that “multiple beef herds” in Carbon County, near Elk Mountain, had contracted anthrax — the first confirmed cases of the disease in Wyoming cattle since the 1970s. The same day, in a statement on its website, the Wyoming Game and Fish Department confirmed a case of anthrax in a dead moose in Carbon County. It has been almost 70 years since an anthrax case in wildlife has been reported in the state, department officials wrote.

Speaking to local outlet Cowboy State Daily on Sept. 4, State Veterinarian Dr. Hallie Hasel confirmed that the anthrax cattle outbreak had killed “approximately 50 to 60” animals. She added that the outbreak is currently “localized” but that investigations are ongoing.

Here’s what we know about the anthrax outbreak so far.

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What is anthrax?

Anthrax is an infectious disease that is caused by the spore-forming bacterium Bacillus anthracis.

The bacteria are found naturally in the environment worldwide. Their spores can remain dormant for decades, occasionally causing outbreaks that are more likely after periods of heavy rain or flooding following a drought. Militaries around the world began developing the bacterium as a biological weapon about a century ago, and it has occasionally been used in terrorist attacks, such as the 2001 mailing of anthrax spores through the U.S. postal system.

How is anthrax transmitted?

Anthrax most commonly affects livestock and wild animals — such as cattle, sheep and deer — which get the disease after breathing in or ingesting spores from contaminated soil, plants or water.

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In rare circumstances, humans can become infected with anthrax — for instance, if they are exposed to infected animals or contaminated animal products, such as wool, bone or hair. During the 2001 anthrax attacks, 22 people were infected with anthrax and five died.

There are four types of anthrax, named according to how B. anthracis spores enter the body. Cutaneous, or skin-related, anthrax occurs when B. anthracis spores enter the body through a cut or scratch on the skin. If B. anthracis spores are inhaled, the bacteria can infect the lungs and cause inhalation anthrax.

Gastrointestinal anthrax is caused by ingesting B. anthracis spores. It can also be caused by consuming meat from animals infected with anthrax, or potentially from the animals’ milk, if they keep producing milk during infection. Products from anthrax-infected animals are prevented from entering the commercial food supply.

Cases of injection anthrax have been reported in heroin-injecting drug users in Europe. This is similar to cutaneous anthrax, but the infection begins deeper under the skin or muscle where a drug has been injected.

So far, human-to-human transmission of anthrax has not been reported.

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What are the symptoms of anthrax?

Symptoms of anthrax in humans differ depending on the type of infection. Cutaneous anthrax usually causes itchy, small blisters or bumps on the skin, which may develop into painless sores, or ulcers, with black centers. In injection anthrax, these sores develop deep under the skin or in the muscle where the drug was injected.

Inhalation and gastrointestinal anthrax share many symptoms, such as fever, chills and nausea. However, inhalation anthrax may also cause chest pain and shortness of breath, while gastrointestinal anthrax can trigger swelling of the neck or neck glands.

Anthrax symptoms usually develop between one and seven days after exposure, but they may take up to two months to appear. The clinical signs of anthrax in livestock include sudden death, weakness, staggering and difficulty breathing.

Worst anthrax outbreak in decades strikes farms in France

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The most common type of anthrax is cutaneous anthrax, which causes blisters and ulcers on the skin, as pictured above. (Image credit: KATERYNA KON/SCIENCE PHOTO LIBRARY via Getty Images)

How is anthrax treated?

All types of anthrax can be fatal if untreated. However, anthrax can be treated with antibiotics. There is also an effective vaccine available for high-risk individuals ages 18 to 65, such as those who work with potentially infected animals or related products or in labs that handle B. anthracis.

Should people be concerned about anthrax?

Anthrax is rare in developed countries such as the U.S. because of human and animal vaccination programs. Gastrointestinal anthrax, for instance, has never been reported in the country, while only one to two cases of the most common type of the disease, cutaneous anthrax, are reported annually.

The Wyoming Livestock Board is working with producers and veterinarians to limit human exposure in the current outbreak, the board noted in a statement. The Wyoming Game and Fish Department will monitor the outbreak in wildlife, the department said in a separate statement.

While human cases are rare, anyone who thinks they’ve been exposed to anthrax-infected animals should contact the state’s health department and seek medical attention, according to the Wyoming Department of Health.

This article is for informational purposes only and is not meant to offer medical advice.

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Wyoming Game and Fish Department enters next phase in elk feedground management plans

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Wyoming Game and Fish Department enters next phase in elk feedground management plans


CHEYENNE, Wyo. — The Wyoming Game and Fish Department recently announced its plan to move forward in 2026 with developing Feedground Management Action Plans, a key component of the broader Wyoming Elk Feedgrounds Plan.

A release from the Game and Fish Department states that as part of the department’s statewide Chronic Management Plan, the Wyoming Elk Feedgrounds Plan was established to guide the department’s overall and long-term approach to elk management for the 21 feedgrounds across Wyoming. The Wyoming Game and Fish Commission approved the final draft of the strategy in March 2024, following close to four years of collaborative planning with more than 60 volunteer stakeholders.

The release notes that the development of the individual FMAPs is the next step in the process. The department will be working closely with stakeholders, as well as the public, to address key concerns and priorities.

“Game and Fish remains committed to the management of our state’s feedgrounds in an adaptable manner that utilizes the best science available,” said Game and Fish director Angi Bruce. “Supplemental winter feeding of elk has continued to grow in complexity. These plans will allow us to adjust to current and future conditions in feedground management.”

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Specific FMAPs will be developed for each of the six elk herds, as well as their corresponding feedgrounds in the Jackson and Pinedale regions. They’re intended to be a playbook of strategies guiding feedground management through biological, social, and economic factors. FMAPs are designed to be adaptable as on-the-ground-conditions change and science emerges.

In early 2026, draft FMAP documents will be shared during a series of public meetings. They will be presented to the Game and Fish Commission later in the year.

“The goal of the FMAP process is to ensure our strategies are not only sustainable for our agency, but supported and beneficial to the public,” Bruce said. “This is an important issue that has an impact on our state’s wildlife, business owners and residents in our state. Their buy-in and feedback will be essential to a successful long-term plan for feedground management.”

Times and locations for the public meetings will be announced in January on the Game and Fish website. More information on elk feedgrounds, as well as the Feedground Management Plan, can be found on the Elk Feedgrounds page at the Game and Fish Department’s website.

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Peter Moore: A mighty wind blows in Colorado. But it’s worse in Wyoming.

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Peter Moore: A mighty wind blows in Colorado. But it’s worse in Wyoming.


The biggest wind gust in Colorado history blew through Monarch Pass on Feb. 16, 2018, at 148 mph. Not long after that, I moved here, in part to avoid the hurricanes that were pummeling me back East. Now I experience Hurricane Sandy-adjacent conditions while taking mail from my mailbox on random Tuesdays in Fort Collins. 

I liked to think that our National Weather Service would at least give me fair warning for wind events. But now the National Center for Atmospheric Research in Boulder is being dismantled for parts.

(Peter Moore, Special to The Colorado Sun)

That very building got smacked with a 113-mph gust on Dec. 19, two days after Peak 6 at Brekenfridge was hit with a Polar Express clocked at 124 mph. If there had been any snow, I might have been skiing there, caught air off a mogul and landed at Arapahoe Basin.

A cartoon drawing of people hanging from a chairlift that has been blown upside down
(Peter Moore, Special to The Colorado Sun)

Little known fact: Colorado’s breezes are actually under the control of the four Greek gods of wind, plus their local representatives. No wonder it’s so breezy here!

A cartoon drawing of a map of Colorado with the Gov. Jared Polis, U.S. Rep. Lauren Boebert, CU football coach Deion Sanders and a wolf characterized as the four winds.
(Peter Moore, Special to The Colorado Sun)

Fortunately, electric company officials employ a four-part strategy when dangerous winds threaten. 

Xcel Energy's safety shutdown strategy illustrated in four panels: A light switch, wind, someone flipping the switch off, and a fourth dark panel featuring illuminated eyes waiting for the electricity to come back on.
(Peter Moore, Special to The Colorado Sun)

Style-conscious Coloradans are learning to cope. 

A cartoon drawing of wind-influenced hair dos and don'ts, including a bald head as the path of least resistance and a lighted match head as an absolute don't.
(Peter Moore, Special to The Colorado Sun)

No one is beyond the reach of wind. Especially not Denver Broncos field-goal kicker Wil Lutz. 

A cartoon drawing of Denver Broncos kicker Wil Lutz contemplating a field goal when winds are blowing so hard the uprights are leaning. A thought bubble over his head reads "I don't feel good about this."
(Peter Moore, Special to The Colorado Sun)

As concerning as our wind situation is, there is one consolation. 

A cartoon drawing of I-25 north, with a green sign reading No matter how bad the wind is in Colorado, it's 10 times worse in Wyoming. Behind that is a Welcome to Wyoming sign, bent over by wind, with the words Road Closed in illuminated lights
(Peter Moore, Special to The Colorado Sun)

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Peter Moore is an editor, writer, illustrator, ghostwriter, co-author, radio host, TV guest, speaker, editorial consultant, and journalism lecturer.



In his most recent gig he was interim editor-in-chief of BACKPACKER magazine. Peter…
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History: Wild Wyoming Winds

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History: Wild Wyoming Winds


On December 17 and 18, the wind gusts in some areas of Wyoming were recorded blowing over 100 miles per hour. In Sheridan County, they did not get that strong, but they were in 60 mile per hour range.

Wyoming is no stranger to wind, in fact, according to several internet sites, the state with the most wind is Alaska, followed closely by Wyoming.

In this history column we will look at some winter winds, which caused damage and in one case, even a death.

This in The Sheridan Post, December 31, 1912 – Gale Breaks All Records; Reaches Maximum Of 60 Miles Per Hour; Buildings Burned Barns Destroyed — Sheridan Escapes by Merest Good Fortune — Rocks Buildings, Whirls Dust Breaking all weather bureau records for wind velocity, a 60-mile gale early yesterday morning kept city and county on the qui vive for four hours and wreaked havoc throughout the Sheridan country. Among the losses reported as a result of the gale are the following:

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Wallop ranch, Big Horn, ice house, laundry and hay stacks destroyed by fire. Estimated loss, $3,000.

William Moncreiffe ranch. Big Horn—Four hay stacks burned, loss several hundred dollars.

Burgess lumber sheds at Big Horn blown down; other small buildings blown down or un-roofed. Fences blown over.

Tom Masters ranch, Tongue River, barn wrecked by wind; frame structure, total loss.

Pass creek ranchers are reported to have suffered heavily, many out buildings and haystacks being blown over. A barn on the E.N. Secore ranch, Big Goose, in reported to have been wrecked by the wind.

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At the Wallop ranch the fact that the wind was from the south was all that saved the residence from destruction. The big barn was saved only through the heroic work of neighbors. The entire countryside turned out to assist in subduing the flames. In one instance, burning brands were carried a distance of a mile across the fields to the William Moncreiffe ranch, setting fire to hay stacks. The fire is supposed to have originated in the Wallop laundry, although flames were observed in the laundry building and a nearby haystack almost simultaneously. A corner of the barn caught fire and the big building would have gone with other structures but for the promptness with which neighbors hastened to the rescue.

The wind swept down Little Goose Canyon and out across the flats with terrific velocity. Malcolm Moncreiffe, who was in the city yesterday, declares that while at its maximum the gale must have blown at fully 75 miles an hour.

Weather Observer Prise is authority for the statement that the maximum reached in Sheridan was 60 miles an hour, and that only for two or three-minute periods. The greatest sustained velocity, for a five minute or longer period, was recorded at 2:45, when the wind attained a maximum of 56 miles per hour for four and a half hours, from then until after 6 o’clock, the gale averaged from 46 to 56 miles per hour, according to weather bureau records. At 6 o’clock it was blowing 50 miles and while calming down after daylight continued all day with more or less severity. While the storm was at its height clouds of dust filled the air, entering upon windows and doors and leaving a trail of work and profanity in its wake.

Residents of the city immediately expected to hear the fire alarm, but fortunately for residence and business district not a fire was reported. Mayor Kutcher was one of those who lay awake waiting for the gong.

Many chimneys belched red, and the fact that the conflagration did not ensue is due to the merest luck. A small blaze on Fifth street was caught before it spread.

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Shortly after 2 o’clock all the lights in the city went out and remained off for more that an hour. Trouble at the Tongue River plant is given as the cause. According to the wind gauge at the weather bureau the gale blew from the west and northwest until daylight when it veered around to the northwest, it reached its maximum while blowing directly from the west. Building were rocked on their foundations and in some cases were vacated by their occupants for fear of collapse. A 64-mile an hour gale was recorded in May of 1919. In January and November of 1811, tbe wind attained a velocity of 50 miles an hour. in December 1907, a 60 miles per hour wind blew in.

As we saw in the above story, during times of high winds, power is often disrupted. In the recent December windstorm, many residents in the Sheridan, Johnson and Campbell County areas were without power for a time. Anything with high lines, such electricity can be affected by the winds.

This from the Laramie Daily Boomerang, Monday, March 22,1920 – High Winds Cause Delay In Telegraph Service – Crossed wires between here and Cheyenne resulted in some inconvenience today and the telephone and telegraph service of both cities have suffered from delay. Crews of men have been working along the line repairing the damage and by late in the afternoon the service was again working on schedule. High winds caused considerable trouble along the line though no great damage to property has been reported.

Although today, most land line telephone lines are underground, and unless a tower blows down cell phone is little affected, but loss of power can create problems with the home internet and wi-fi, as the modems are powered by electricity.

This past year, there have been many instances of semi trucks being blown over the winds. There are numerous postings on Wyoming Department of Transportation website about the interstates being closed for high profile vehicles under 20000 pounds due to the blow over risk. Even train cars can be at risk, and create a risk.

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This from The Sheridan Daily Enterprise, January 9, 1911 –Cheyenne, Wyo., Jan. 9. — Much damage and many accidents have resulted today from one of the worst windstorms that has ever blown over the city. George Garner, foreman of the water service of the Colorado and Southern Railroad, was struck by a boxcar which had blown loose from its moorings and had his arm crushed to a pulp. Harry Long, a Union Pacific switch man, was thrown from the top of a boxcar when the roof was blown off, and his leg fractured.

Judge Clark was literally blown over on the pavement and sustained a broken nose. A number of wagons were blown over in the streets and two drivers were injured. No less than a dozen residences have been removed from their foundations and several glasses blown in F. J. Kihm, manager of a restaurant, lost a considerable sum of money in bills which were whisked from a bank book he was carrying on the way to make a deposit. Telephone wires are down and the service badly damaged.

When most people, especially rural folks, had fireplaces and wood and coal stoves, brick chimneys were often vulnerable in a windstorm.

The Laramie Republican, January 10, 1916 – Chimney Blown Over in a Windstorm – O. Herrlck of Mandel, the ranch man and chairman of the board of county commissioners, arrived from the ranch yesterday afternoon and is spending a few days with his family here. A severe wind storm raged in the Little Laramle valley Saturday, a chimney at the Herrick home having been blown over. There wasn’t a fire in the fireplace at the time and no further damage was done to the building. Mr. Herrlck knew of no other damage in that neighborhood from the wind.

Even deaths can be attributed to the winds.

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The Casper Daily Tribune, February 17, 1921 – Rancher Killed When Hay Wagon is Blown Over in Heavy gale.

Laramie, Wyoming – Feb. 11 – Charles Weisbach, a ranch worker, was instantly killed Wednesday when a load of hay which he was bringing to town was overturned by high wind on Twelve-mile hill, west of Laramie. He was crusted beneath the overturned hay rack and load.

For those folks who work outside, windchill can be dangerous as well, so it pays to bundle up with working in the winter winds.

So, for those of us living in Wyoming, wind is a part of life. We just hope that it doesn’t last for to long.




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