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Journal of Clinical Microbiology, June 2007, p. 2084-2087, Vol. 45, No. 6
0095-1137/07/$08.00+0     doi:10.1128/JCM.01334-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

CASE REPORT

First Case of Human Babesiosis in Korea: Detection and Characterization of a Novel Type of Babesia sp. (KO1) Similar to Ovine Babesia{triangledown}

Jung-Yeon Kim,1,{dagger} Shin-Hyeong Cho,1,{dagger} Hyun-Na Joo,1 Masayoshi Tsuji,2 Sung-Ran Cho,3 Il-Joong Park,3 Gyung-Tae Chung,1 Jung-Won Ju,1 Hyeng-Il Cheun,1 Hyeong-Woo Lee,1 Young-Hee Lee,1 and Tong-Soo Kim1*

Division of Malaria and Parasitic Diseases, National Institute of Health, KCDC, Seoul 122-701, Korea,1 School of Veterinary Medicine, Rakuno-Gakuen University, Ebetsu 069-8501, Japan,2 Department of Laboratory Medicine, Ajou University School of Medicine, Suwon 443-749, Korea3

Received 29 June 2006/ Returned for modification 11 September 2006/ Accepted 14 March 2007

We report on the first case of human babesiosis in Korea. The intraerythrocytic parasite (KO1) in the patient's blood mainly appeared as paired pyriforms and ring forms; but Maltese cross forms were not seen, and the parasite showed morphological features consistent with those of the genus Babesia sensu stricto. The sequence of the 18S rRNA gene of KO1 was closely related to that of Babesia spp. isolated from sheep in China (similarity, 98%). The present study provides the first evidence of the presence of a hitherto unidentified, new type of Babesia parasite capable of infecting humans.


* Corresponding author. Mailing address: Division of Malaria and Parasitic Diseases, National Institute of Health, Korean Centers for Disease Control and Prevention, Seoul 122-701, Korea. Phone: 82-2-380-1505. Fax: 82-2-380-1560. E-mail: nihkim{at}nih.go.kr

{triangledown} Published ahead of print on 28 March 2007.

{dagger} J.-Y. Kim and S.-H. Cho have contributed equally to the work.


Journal of Clinical Microbiology, June 2007, p. 2084-2087, Vol. 45, No. 6
0095-1137/07/$08.00+0     doi:10.1128/JCM.01334-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.




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