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KMID : 0425120140520060691
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Parasites, Hosts and Diseases
2014 Volume.52 No. 6 p.691 ~ p.694
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Prevalence of Dirofilaria immitis Infection in Stray Cats by Nested PCR in Korea
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Park Hyung-Jin
Lee Sang-Eun
Lee Won-Ja
Oh Jung-Hyun
Maheswaran Easwaran
Seo Kyoung-Won
Song Kun-Ho
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Abstract
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The purpose of this study was to conduct a survey of Dirofilaria immitis infection among stray cats in Korea using nested PCR. We included 235 stray cats (121 females and 114 males) and evaluated each for the presence of feline heartworm infection. Blood samples were collected from 135 cats in Daejeon, 50 cats in Seoul, and 50 cats from Gyeonggi-do (Province). Of the 235 DNA samples, 14 (6.0%) were positive for D. immitis. The prevalence of infection in male cats (8/114, 7.0%) tended to be higher than that in female cats (6/121, 5.0%), but the difference was not statistically significant. In each location, 8, 2, and 4 cats were positive for infection, respectively, based on DNA testing. No significant differences in the prevalence were observed among the geographic regions, although the rate of infection was higher in Gyeonggi-do (8.0%) than Daejeon (5.9%) and Seoul (4.0%). We submitted 7 of the 14 D. immitis DNA-positive samples for sequencing analysis. All samples corresponded to partial D. immitis cytochrome c oxidase subunit I gene sequences with 99% homology to the D. immitis sequence deposited in GenBank (accession no. FN391553). To the best of our knowledge, this is the first survey using nested PCR to analyze the prevalence of D. immitis in stray cats in Korea.
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KEYWORD
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Dirofilaria immitis, prevalence, nested PCR, stray cat
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