Brucellosis

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An infection caused by a bacterium of the genus Brucella. 

The source of infection is usually related to the consumption of unpasteurized milk or cheese or direct contact with infected animals, which is why it is more common among farmers, veterinarians and laboratory workers.

Initial symptoms may be similar to those of the flu, with fever, muscle and joint aches, and fatigue. The fever is typically intermittent, coming and going over a period of time; it can last for weeks along with loss of appetite, insomnia, irritability and/or sadness.  

Diagnosis can be complicated because of its generalized symptoms. Sometimes it is categorized as fever of unknown origin. It can be confirmed by blood cultures and/or serologic tests.

Treatment is based on a combination of antibiotics. Analgesics may be part of the treatment to control pain, antipyretics to control fever, and bed rest.

Author
Dr. Oscar Garcia-Esquirol
Copyright
© TeckelMedical 2026

Symptoms

    Night sweats


    Intermittent fever


    Lower back pain


    Fever between 39ºC / 102.2ºF and 39.9ºC / 103.82ºF


    High fever of 40ºC/104ºF or above

Pre-hospital care recommendations

Take over-the-counter pain relievers or anti-inflammatories.
Relative rest, rest until symptoms subside.