The first report of Brucella melitensis biovar 2 strain isolated from cattle in Turkey
2023
Kadir Akar | Gulseren Yıldız Oz
Bovine brucellosis is an infectious zoonotic disease of great impact on animal welfare and has significant economic implications on livestock farm worldwide. The disease is caused primarily by Brucella abortus (B. abortus), while B. melitensis is less common, and B. suis infection is rare. B. melitensis is the most common causative agent of brucellosis in small ruminants and humans. Although the main host of B. melitensis is considered to be small ruminants, this bacterium is also present in large ruminants. Despite brucellosis has been eradicated in many European countries, it is still endemic in Mediterranean countries and Turkey. The most prevalent Brucella species in the Mediterranean basin and Turkey is B. melitensis biovar (bv) 3. Previous studies have reported that B. melitensis bv2 is quite low in Turkey. This is the first study to isolate B. melitensis bv2 from cattle in Turkey. The strains were characterized using classical biotyping methods and then were molecularly confirmed. Multilocus variable number tandem repeat analysis (MLVA-16) typing of the strains revealed a novel genotype (1-5-3-13-3-2-3-2-4-41-8-5-4-3-3-7), which matches the Multilocus sequence typing (MLST) profiles in the database of ST8 (3-2-3-2-1-5-3-2-8). These results indicate that B. melitensis bv2 can easily infect cattle and this has to be considered in the epidemiology and control of bovine brucellosis. Circulating the highly pathogenic B. melitensis bv2 in cattle farms is of public health concern. [Ger. J. Vet. Res. 2023; 3(2.000): 11-15]
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