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  1. Jun 21, 2024 · Brucellosis occurs mainly in cattle, bison, and swine, but can affect other animals (cervids, goats, sheep, and horses) and people. In cattle and bison, the bacteria of concern is Brucella abortus . It has been present in the United States since the 1930s.

  2. Jun 25, 2024 · Brucellosis is a contagious, infectious, and communicable disease, primarily affecting cattle, bison, and swine, and is caused by bacteria of the genus Brucella. Brucella abortus (B. abortus) primarily affects bovine species; however, goats, sheep, and horses are also susceptible.

    • Other animals
    • Life cycle
    • Cause
    • Toxicity
    • Symptoms
    • Diagnosis
    • Prevention
    • Conservation

    The disease in cattle, water buffalo, and bison is caused almost exclusively by Brucella abortus; however, B suis occasionally is isolated from seropositive cows but does not appear to cause clinical signs and is not contagious from cow to cow. In some countries, the disease in cattle is caused by B melitensis. The syndrome is similar to that cause...

    Infection spreads rapidly and causes many abortions in unvaccinated cattle. In a herd in which disease is endemic, an infected cow typically aborts only once after exposure; subsequent gestations and lactations appear normal. After exposure, cattle become bacteremic for a short period and develop agglutinins and other antibodies; some cattle resist...

    Natural transmission occurs by ingestion of organisms, which are present in large numbers in aborted fetuses, fetal membranes, and uterine discharges. Cattle may ingest contaminated feed and water or may lick contaminated genitals of other animals. Venereal transmission by infected bulls to susceptible cows appears to be rare. Transmission may occu...

    Brucellae have been recovered from fetuses and from manure that has remained in a cool environment for >2 mo. Exposure to direct sunlight kills the organisms within a few hours.

    Abortion is the most obvious manifestation. Infections may also cause stillborn or weak calves, retained placentas, and reduced milk yield. Usually, general health is not impaired in uncomplicated abortions.

    Diagnosis is based on bacteriology or serology. B abortus can be recovered from the placenta but more conveniently in pure culture from the stomach and lungs of an aborted fetus. Most cows cease shedding organisms from the genital tract when uterine involution is complete. Foci of infection remain in some parts of the reticuloendothelial system, es...

    Efforts are directed at detection and prevention, because no practical treatment is available. Eventual eradication depends on testing and eliminating reactors. The disease has been eradicated from many individual herds and areas by this method. Herds must be tested at regular intervals until two or three successive tests are negative. Vaccination ...

    Noninfected herds must be protected. The greatest danger is from replacement animals. Additions should be vaccinated calves or nonpregnant heifers. If pregnant or fresh cows are added, they should originate from brucellosis-free areas or herds and be seronegative. Replacements should be isolated for ~30 days and retested before being added to the h...

  3. Jun 14, 2018 · Clinical Picture of Brucellosis in Cattle Brucellosis is a widespread reproductive disease, commonly causing abortion, death of young ones, stillbirth, retained placenta or birth of weak calves, delayed calving, male infertility, and marked reduction in milk yield [ 37 , 58 , 59 , 60 ].

    • Muhammad Zahoor Khan, Muhammad Zahoor
    • 10.3390/tropicalmed3020065
    • 2018
    • Trop Med Infect Dis. 2018 Jun; 3(2): 65.
  4. Jul 18, 2019 · Brucellosis can be spread through unpasteurized milk or undercooked meat from an infected cow, and it causes severe infection in vital organs such as the liver or spleen. If you believe you’ve contracted brucellosis, make sure to contact a doctor as soon as possible.

  5. Bovine brucellosis is a contagious disease of livestock typically caused by Brucella abortus which may also infect people. The disease is also known as “contagious abortion” or “Bang’s disease” in livestock andas “undulant fever” in people because of the recurring fevers accompanying the infection.

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  7. Jan 18, 2021 · The seroprevalence of brucellosis in cattle was conducted in Cameroon, Central Africa, using Rose Bengal Plate Test (RBPT) and indirect-ELISA (Awah-Ndukum et al. 2018). The overall seroprevalence at individual and herd levels were found to be 5.4 and 25.6%, respectively.

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