What are symptoms of brucellosis in animals?
Emma Payne
Published Jan 24, 2026
In sheep and goats the main signs of brucellosis are:
- abortions in the herd.
- swollen udders due to infection of the mammary glands (milk producing organs)
- swollen testicles.
- nervousness.
- fever.
What are the signs and symptoms of brucellosis in animals?
Brucellosis causes reproductive problems (e.g. abortions, stillbirth, infertility) in most species of animals. Other signs can include arthritis in cows and pigs, mastitis and lameness in goats, and oozing skin lesions in horses (“fistulous withers”).
What is the main symptom of brucellosis?
Signs and symptoms of brucellosis may include fever, joint pain and fatigue. The infection can usually be treated with antibiotics. However, treatment takes several weeks to months, and the infection can recur. Brucellosis affects hundreds of thousands of people and animals worldwide.
How does Brucella affect animals?
The nature of Brucellosis
The disease can lead to an abortion storm in infected females and if it becomes established can lead to decreased milk yields, infertility, weak calves and serious financial loss.
What are the symptoms of brucellosis in dogs?
Clinical Signs in Dogs
Infected male dogs may have abnormally sized testicles (swollen or shrunken). Other signs observed with canine brucellosis include infertility, anorexia, weight loss, pain, lameness, incoordination, swollen lymph nodes, and muscle weakness.
19 related questions foundDo dogs with brucellosis need to be put down?
Treatment for life is often necessary. Sadly, this is why so many brucellosis-positive dogs are euthanized. Many breeders consider euthanasia preferable to the possibility of exposure that persists when affected dogs are treated and allowed to interact with uninfected dogs.
Is brucellosis treatable in dogs?
Sadly, there is no guaranteed cure for this infection in dogs. It is very difficult for antibiotics to effectively penetrate cells to eradicate the disease. Long-term doses of combinations of antibiotics have been tried, as well as neutering and isolation of infected dogs, but the infection often reappears.
Can brucellosis be cured in animals?
Can brucellosis in animals be cured? No. Repeated attempts to develop a cure for brucellosis in animals have failed. Occasionally, animals may recover after a period of time.
How is brucellosis diagnosed?
Brucellosis can be diagnosed in a laboratory by finding bacteria in samples of blood, bone marrow or other bodily fluids. Serological tests can also be done to detect antibodies against the bacteria. Learn more about what can be done to help confirm diagnosis of this disease.
How serious is brucellosis?
Human cases of brucellosis are uncommon, with only 100 to 200 cases a year reported in the U.S. Although brucellosis can make you very sick, it is rarely fatal.
How is brucellosis treated in animals?
What is the treatment for canine brucellosis? Although antibiotics (most often minocycline or doxycycline, possibly enrofloxacin) can be used to help control the infection, no treatment is completely effective at eliminating the bacteria, and any dog that has been infected with B.
What temp kills brucellosis?
temperature of 160°F as measured with a food thermometer.
What are the symptoms of brucellosis in goats?
Brucellosis (Malta Fever, Mediterranean Fever, Undulant Fever) causes fever, night sweats, chills, headaches, joint and bone pain, muscle aches, weakness, weight loss, nausea, and depression. This disease is difficult to diagnose and resembles influenza or malaria.
How long does it take for brucellosis symptoms to appear?
Symptoms usually appear within five to 30 days after you come in contact with the bacteria.
What antibiotics treat brucellosis?
Death from brucellosis is rare, occurring in no more than 2% of all cases. Generally, the antibiotics doxycycline and rifampin are recommended in combination for a minimum of 6-8 weeks.
How is brucellosis transmitted?
Brucellosis is an infectious disease caused by bacteria. People can get the disease when they are in contact with infected animals or animal products contaminated with the bacteria. Animals that are most commonly infected include sheep, cattle, goats, pigs, and dogs, among others.
What is brucellosis animal?
What is brucellosis? It is a contagious, costly disease of ruminant (E.g. cattle, bison and cervids) animals that also affects humans. Although brucellosis can attack other animals, its main threat is to cattle, bison, cervids (E.g. elk and deer), and swine.
Is brucellosis contagious in dogs?
How is brucellosis spread? Dog-to-dog spread of brucellosis occurs most often through breeding and by contact with vaginal discharges, semen, birthing fluids, and urine. Contact with an infected dog's blood, milk, saliva, and feces are less common sources of infection.
Is brucellosis mad cow disease?
Chronic Wasting Disease, or CWD, is a fatal disease of the central nervous system in deer and elk. While related to bovine spongiform encephalopathy (BSE, commonly known as mad cow disease), CWD is a separate disease known to infect only deer and elk.
Can humans get brucellosis from dogs?
Yes. However, human infections with Brucella canis are rare. Direct contact or aerosol exposure to infected animal fluids is the primary way people are infected with canine brucellosis. People can also become infected by ingesting the bacteria or by contamination of mucous membranes and breaks in the skin.
When should dogs be tested for brucellosis?
Infected Kennels
The best way to clear a kennel of brucellosis is to test all dogs in the kennel every 4 weeks until all of them have had two consecutive negative tests. Dogs that are positive for brucellosis should be removed from the kennel as soon as possible. There is no cure.
How do you prevent brucellosis in dogs?
The best way to prevent brucellosis is to spay or neuter your dog according to your veterinarian's advice. Since breeding your dog should be a very well-considered decision, discuss with your veterinarian the potential consequences of breeding. Reducing the risk of exposing your favorite canine also reduces your risk.
How much is a brucellosis test for dogs?
Samples: Sterile blood culture in sodium citrate tubes or vaginal swabs in a sterile tube are the preferred sample types. The cost for the first 10 samples is $30.00 each, and for more than 11 samples the cost is $25.00 each. The highly sensitive ME TAT agglutination screening test detects Brucellosis canis antibodies.
How do you test for brucellosis in goats?
Diagnosis is made by bacteriologic examination of milk or an aborted fetus or by serum agglutination tests. The disease can be eliminated by slaughter of the herd. In most countries where B melitensis is endemic, vaccination with the Rev. 1 strain is common.
How long does brucellosis last?
The symptoms usually improve and are completely gone within about two to six months. However, the prognosis is poor in people who develop organ changes or complications such as heart damage, neurological, or genitourinary problems caused by chronic Brucella infection.