1.Prevalence of antibodies to coxiella burnetii phase I antigen among Korean.
Joon Myung KIM ; Sang Rae CHO ; Eung KIM ; Hyun Ok KIM ; Yoon Seob JUNG ; Joo Duk KIM ; Chun Soo HONG
Korean Journal of Infectious Diseases 1993;25(2):103-108
No abstract available.
Antibodies*
;
Coxiella burnetii*
;
Coxiella*
;
Prevalence*
2.Isolation and cultivation of a coxiella burnetii strain from raw milk of dairy cows in korea.
Joo Young PARK ; Won Young LEE ; Sang Nae CHO ; Yoon Sun PARK ; Kyoung Sook PARK ; Hee Jeong YOUN ; Yung Bai KANG ; Choon Myung KOH
Journal of the Korean Society for Microbiology 1993;28(4):285-293
No abstract available.
Coxiella burnetii*
;
Coxiella*
;
Korea*
;
Milk*
3.Prevalence of antibodies to the coxiella burnetii phase II antigen among residents in korea.
Sang Nae CHO ; Sun Hee BAEK ; Yun Sop CHONG ; Joo Deuk KIM ; Won Young LEE
Journal of the Korean Society for Microbiology 1993;28(3):223-228
No abstract available.
Antibodies*
;
Coxiella burnetii*
;
Coxiella*
;
Korea*
;
Prevalence*
4.Clinical features of twelve coxiellemia pediatric patients in Korea.
Chuhl Joo LYU ; Dong Soo KIM ; Young Mo SOHN ; Ki Sup CHUNG ; Kir Young KIM ; Won Young LEE
Journal of the Korean Pediatric Society 1992;35(9):1220-1225
No abstract available.
Coxiella burnetii
;
Humans
;
Korea*
5.Prevalence of antibodies to the phase I antigen of coxiella burnetii , the Q fever agent, among residents in Korea.
Sang Nae CHO ; Mi Kyeong LEE ; Jae Myun LEE ; Joo Deuk KIM ; Won Young LEE
Journal of the Korean Society for Microbiology 1992;27(3):283-288
No abstract available.
Antibodies*
;
Coxiella burnetii*
;
Coxiella*
;
Korea*
;
Prevalence*
;
Q Fever*
6.Genotyping of Coxiella burnetii strains detected in cattle from a nationwide survey in Korea
Journal of Veterinary Science 2019;20(1):95-97
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.
Agriculture
;
Animals
;
Cattle
;
Coxiella burnetii
;
Coxiella
;
Humans
;
Korea
;
Livestock
7.Clinical and Genetic Features of Coxiella burnetii in a Patient with an Acute Febrile Illness in Korea.
Seung Hun LEE ; Jung Yeon HEO ; Hae Kyung LEE ; Yeong Seon LEE ; Hye Won JEONG ; Seon Do HWANG
Journal of Korean Medical Science 2017;32(6):1038-1041
Although Q fever is an important zoonotic infection with a worldwide distribution, no human isolates of Coxiella burnetii have been identified in Korea. For the first time, we identified the nucleotide sequence of C. burnetii from a 32-year-old man with an acute febrile illness in Korea. Diagnosis of acute Q fever was confirmed by seroconversion using indirect immunofluorescence antibody assays. Phylogenetic analysis demonstrated high sequence similarity (99.6%–100%) with C. burnetii 16S rRNA sequences identified from the reservoir. These results are the first genetic analysis of C. burnetii in a human case of Q fever in Korea.
Adult
;
Base Sequence
;
Coxiella burnetii*
;
Coxiella*
;
Diagnosis
;
Fluorescent Antibody Technique, Indirect
;
Humans
;
Korea*
;
Q Fever
;
Seroconversion
;
Zoonoses
8.Seroprevalence to Coxiella burnetii in Patients with Acute Febrile Episodes during 1993.
Kwang Don JUNG ; Won Jong JANG ; Jong Hyun KIM ; Seung Hyun LEE ; Ik Sang KIM ; Myung Sik CHOI ; Yun Won KIM ; Yon Il HWANG ; Kyung Hee PARK
Journal of Bacteriology and Virology 2002;32(4):299-306
Coxiella burnetii is the etiological agent of Q fever, that may occur either acutely or the chronically. To understand the seroepidemiological patterns of C. burnetii infection in Korea, we examined a total of 3,178 sera from patients with acute febrile episodes by using indirect immunofluorescence assay (IFA) for detectable antibodies to C. burnetii and other eight rickettsial antigens. The IFA seropositivity>or=1:20 for C. burnetii phase II was 11.5% (368 out of 3,178 sera). The co-existence of antibodies to other rickettsial antigens was found in 216 out of the 368 positive sera. Thirty-seven point five percent (n=138) had antibodies to R. tsutsugamushi (cutoff>or=1:20), 16% (n=59) to Ehrlichia sennetsu, 14.9% (n=55) to Rickettsia typhi, 13.5% (n=50) to R. akari, 11.4% (n=42) to R. japonica, 8.9% (n=33) to R. prowazekii, 7.6% (n=28) to R. sibirica, and 6.7% (n=25) to R. conorii by IFA, respectively. These results are consistent with previous reports documenting diverse serum cross-reactivity in chronic Q fever. Therefore we excluded the samples that reacted to other rickettsial antigens at same or higher titers than to C. burnetii, resulting in the seropositive rate of 4.1%. The serological prevalence was 2% (n=64) when the conventional cut-off titer of 1:80 was used. Our results suggest that infections with C. burnetii are more prevalent than expected previously and should be differentially diagnosised for febrile illness occurring after exposure to ticks or other vectors.
Antibodies
;
Coxiella burnetii*
;
Coxiella*
;
Diagnosis
;
Fluorescent Antibody Technique, Indirect
;
Humans
;
Korea
;
Neorickettsia sennetsu
;
Prevalence
;
Q Fever
;
Rickettsia
;
Rickettsia typhi
;
Seroepidemiologic Studies*
;
Ticks
9.Seroprevalence of Coxiella burnetii infection in cattle on Ulleung Island, Korea
Min Goo SEO ; In Ohk OUH ; Young Hoan KIM ; Joong Kew KIM ; Oh Deog KWON ; Dongmi KWAK
Korean Journal of Veterinary Research 2018;58(3):147-151
We assessed the seroprevalence of Coxiella burnetii (C. burnetii) in cattle on Ulleung Island, Korea in a population-based follow up study for 4 years and determined the spatial distribution and risk factors associated with C. burnetii. The seroprevalence of C. burnetii was determined to be 1.4–2.0% during 2011–2014. Overall, nine cattle from three farms that tested seropositive showed C. burnetii antibody seroconversions between 2011 and 2014. The number of seropositive cattle was low, suggesting that movement of and contact between animals was possible risk factors for the transmission of C. burnetii.
Agriculture
;
Animals
;
Cattle
;
Coxiella burnetii
;
Coxiella
;
Enzyme-Linked Immunosorbent Assay
;
Follow-Up Studies
;
Korea
;
Q Fever
;
Risk Factors
;
Seroconversion
;
Seroepidemiologic Studies
10.Molecular Detection of Coxiella burnetii in Cattle on Ulleung Island, Korea: A Population-based Study with Four Years of Follow Up
Min Goo SEO ; Oh Deog KWON ; Dongmi KWAK
The Korean Journal of Parasitology 2019;57(1):69-73
In a population-based study with 4 years of follow up, we evaluated the prevalence of Coxiella burnetii in cattle on Ulleung Island, Korea. In this study, the rates of C. burnetii infection in cattle on Ulleung Island were determined by PCR and were found to be 0.3–1.0% in the period 2011–2014. All 17 C. burnetii partial 16S rRNA gene sequences from PCR-positive cattle were identical and 2 geographic representatives were included in our analysis. The nucleotide sequences of the 2 samples showed high (98.4–100%) identity with C. burnetii sequences obtained from the GenBank. In this long-term tracking study, the number of cattle positive for C. burnetii on Ulleung Island was low. To prevent the transmission of C. burnetii on Ulleung Island, control strategy should include biosecurity improvement in surveillance, livestock management, administering suitable tests before purchasing animals to detect C. burnetii shedders, and restricting movements between herds.
Animals
;
Base Sequence
;
Cattle
;
Coxiella burnetii
;
Coxiella
;
Databases, Nucleic Acid
;
Follow-Up Studies
;
Genes, rRNA
;
Korea
;
Livestock
;
Phylogeny
;
Polymerase Chain Reaction
;
Prevalence