Brucella

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Related to brucellae: Brucella melitensis

Brucella

 [broo-sel´ah]
a genus of gram-negative, aerobic, nonmotile cocci or rod-shaped bacteria, the etiologic agent of brucellosis. B. abor´tus, which causes infectious abortion in cattle, is the most common cause of infection in humans; other species pathogenic for humans are B. meliten´sis, found in goats and sheep, and B. su´is, found in swine.

brucella

 [broo-sel´ah]
any member of the genus Brucella. adj., adj brucel´lar.

Brucella

(brū-sel'lă),
A genus of encapsulated, nonmotile bacteria (family Brucellaceae) containing short, rod-shaped to coccoid, gram-negative cells. These organisms do not produce gas from carbohydrates and are parasitic. They invade all animal tissues and infect the genital organs, the mammary gland, and the respiratory and intestinal tracts; are pathogenic for humans and various species of domestic animals. The type species is Brucella melitensis.

brucella

(bro͞o-sĕl′ə)
n. pl. bru·cellae (-sĕl′ē) or bru·cellas
Any of various aerobic, short, rod-shaped bacteria of the genus Brucella that are pathogenic to humans and domestic animals.

Brucella

A genus of gram-negative, nonmotile, non-encapsulated coccobacilli of unresolved taxonomy, which grows slowly on blood and chocolate agars. It is a facultative intracellular pathogen and causes brucellosis.

Accepted species
B melitensis, B abortus, B suis, B ovis, B neotomae, B canis, B ceti, B pinnipedialis, B microti, B inopinata.

Bru·cel·la

(brū-sel'lă)
A genus of encapsulated, nonmotile bacteria containing short, rod-shaped to coccoid, gram-negative cells. These organisms are parasitic, invading all animal tissues and causing infection of the genital organs, the mammary gland, and the respiratory and intestinal tracts, and are pathogenic for humans and various species of domestic animals.

Bruce,

Sir David, English surgeon, 1855-1931.
Brucella abortus - infectious bacteria causing abortions in cattle, sheep, mares; causes undulant fever in man and a wasting disease in chickens. Synonym(s): abortus bacillus; Bang bacillus
Brucella - a genus of encapsulated, nonmotile bacteria (family Brucellaceae) causing infection of the genital organs, the mammary gland, and the respiratory and intestinal tracts.
brucellosis - an infectious disease caused by Brucella, and transmitted by direct contact with diseased animals or through ingestion of infected meat, milk, or cheese. Synonym(s): febris undulans; Malta fever; Mediterranean fever; undulant fever
References in periodicals archive ?
Because of the variable manifestations of human brucellosis, a wide array of different clinical specimens may contain viable brucellae, including pus, blood, bone marrow, synovial fluid and tissues, and more rarely, cerebrospinal fluid, urine, and genital exudates.
The frequent failure of clinical laboratories to correctly identify isolates as brucellae is particularly worrisome because these organisms are regarded as potential agents for bioterrorism.
The probable source of the infection is usually apparent when disease occurs in laboratories where isolation of brucellae is rare (21).
More commonly, exposures are the result of unsafe laboratory practices, such as sniffing plates (8,24,26,29,34); working on an open bench with viable organisms (14,16,17,20,22); not using protective equipment such as gloves, masks, and goggles (34); or ingesting suspensions of living brucellae during mouth pipetting (3).
In the United States, organisms presumptively identified as brucellae should be sent to CDC or another public health laboratory following the specific guidelines for transferring "select agents." 2) Inform infection control services and public health authorities, who may choose to involve CDC.
8) Because brucellae are relatively slow-growing bacteria, cultures for the organism have been traditionally kept for several weeks.
Because of the high attack rate of brucellosis among exposed workers, the unpredictable and often chronic course of the disease, and the difficulties in eradicating the organism once a symptomatic infection has been established, postexposure prophylaxis is probably indicated for all persons alter an obvious exposure to living brucellae (26).
Low antibody titers also could be related to early administration of antimicrobial therapy, as has been shown in patients infected with smooth brucellae (11).
Therapeutic and immunologic parameters seem to be very similar to those observed in infections by smooth brucellae. Table.
The epidemiologic pattern of human infection with brucellae has been changing in the United States since 1947, when the number of reported cases was the highest ever recorded (6,321 total; 4.4 cases/100,000 population) (19,20).