J Vet Sci.  2019 Jan;20(1):95-97. 10.4142/jvs.2019.20.1.95.

Genotyping of Coxiella burnetii strains detected in cattle from a nationwide survey in Korea

• Kim YH
• Kim D

• KMID: 2434784
• DOI: http://doi.org/10.4142/jvs.2019.20.1.95

Abstract

A total of 123 Coxiella burnetii strains detected in cattle from a nationwide survey in Korea were classified into five genomic groups: I (0.8%), II (14.6%), III (12.2%), IV (66.7%), and V (5.7%). Acute Q-fever strains (Groups I, II, and III) comprised 27.6% and chronic strains (Groups IV and V) comprised 72.4%. At a dairy farm where both types were present, the detection rate was 6.7-times higher than that of another farm where only chronic strains were detected. Both acute and chronic Q-fever strains are widespread in Korea, and their presence could represent an active transmission to livestock and humans.

Keyword

Coxiella burnetii; Korea; Cattle; Genomic groups

MeSH Terms

Agriculture
Animals
Cattle*
Coxiella burnetii*
Coxiella*
Humans
Korea*
Livestock

Figure

• 

  Fig. 1 Clinical type and genomic group of Coxiella burnetii strains detected in Korean cattle. (A) Clinical types of C. burnetii strains in bulk tank milk (BTM), individual cow milk, and serum samples. ‘Acute’ denotes acute Q-fever strains belonging to genomic Groups I, II, and III, and ‘chronic’ denotes chronic Q-fever strains belonging to genomic Groups IV and V. The numbers within each column indicate the detection rate of each clinical type. (B) Genomic Groups of C. burnetii strains in the individual cow milk samples from two dairy herds (Farms No. 1 and No. 2). Genomic Group I was not detected at either farm. The numbers within each column indicate the detection rate of each genomic group.

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