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장티푸스 진단에 있어서 Vi-Indirect Fluorescent Antibody Test의 민감도 및 특이도

Other Titles
 Sensitivity and Specificity of Vi-Indirect Fluorescent Antibody Test in Diagnosis of Typhoid Fever 
 장경희  ;  류동렬  ;  박성하  ;  박병규  ;  이준구  ;  염준섭  ;  최영화  ;  송영구  ;  김준명 
 Korean Journal of Infectious Diseases (감염), Vol.30(4) : 379-384, 1998 
Journal Title
 Korean Journal of Infectious Diseases (감염) 
Issue Date
BACKGROUND: Typhoid fever is diagnosed by culture or serological study. The confirmative diagnosis of typhoid fever is made by culture of the causative orga-nism usually from body fluids. Serological test is a supportive diagnostic tool, which is useful for early dia-gnosis. In Severance Hospital, Vi-indirect fluorescent antibody test(Vi-IFAT) using the Vi-antigen of Salmo-nella typhi has been used in the diagnosis of typhoid fever since 1989. We investigated the test results from the past 7 years, in order to clarify the sensitivity and specificity of Vi-IFAT. METHODS: A retrospective study was done on pa-tients whose chief complaint was fever and who were tested using Vi-IFAT in the Severance Hospital from 1989 to 1996. The positive value for Vi-IFAT was de- fined as 1:64 or higher. RESULTS: The sensitivity and specificity of Vi-IFAT for typhoid fever was 94.4% and 95.1%, respectively. The positive and negative predictive values were 85.7% and 98.2% respectively. Positive rates of Vi-IFAT after fever onset increased with time and 68% were positive before the first week. From the first to the second week, 89.5% were positive and after the second week, 100% were positive. CONCLUSION: Vi-IFAT is not only a valuable sero-logic test for the diagnosis of typhoid fever, but also useful in the early diagnosis of the disease.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, June Myung(김준명)
Song, Young Goo(송영구) ORCID logo https://orcid.org/0000-0002-0733-4156
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