Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2020-01-15 |
タイトル |
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タイトル |
Challenges in diagnosing scrub typhus among hospitalized patients with undifferentiated fever at a national tertiary hospital in northern Vietnam |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
著者 |
Katoh, Shungo
Cuong, Ngo Chi
Hamaguchi, Sugihiro
Thuy, Pham Thanh
Cuong, Do Duy
Anh, Le Kim
Anh, Nguyen Thi Hien
Anh, Dang Duc
Sando, Eiichiro
Suzuki, Motoi
Fujita, Hiromi
Yasunami, Michio
Yoshihara, Keisuke
Yoshida, Lay-Myint
Paris, Daniel Henry
Ariyoshi, Koya
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
BACKGROUND: Scrub typhus (ST) is a leading cause of non-malarial febrile illness in Southeast Asia, but evidence of its true disease burden is limited because of difficulties of making the clinical diagnosis and lack of adequate diagnostic tests. To describe the epidemiology and clinical characteristics of ST, we conducted an observational study using multiple diagnostic assays at a national tertiary hospital in Hanoi, Vietnam. METHODOLOGY/PRINCIPAL FINDINGS: We enrolled 1,127 patients hospitalized with documented fever between June 2012 and May 2013. Overall, 33 (2.9%) patients were diagnosed with ST by PCR and/or screening of ELISA for immunoglobulin M (IgM) with confirmatory tests: 14 (42.4%) were confirmed by indirect immunoperoxidase assay (IIP), and 19 (57.6%) were by IIP and PCR. Living by farming, conjunctival injection, eschar, aspartate aminotransferase elevation, and alanine aminotransferase elevation were significantly associated with ST cases (adjusted odds ratios (aORs): 2.8, 3.07, 48.8, 3.51, and 4.13, respectively), and having a comorbidity and neutrophilia were significantly less common in ST cases (aORs: 0.29 and 0.27, respectively). The majority of the ST cases were not clinically diagnosed with rickettsiosis (72.7%). Dominant IIP reactions against a single antigen were identified in 15 ST cases, whereas indistinguishably high reactions against multiple antigens were seen in 11 ST cases. The most frequently observed dominant IIP reaction was against Karp antigen (eight cases) followed by Gilliam (four cases). The highest diagnostic accuracy of IgM ELISA in acute samples was 78%. In a phylogenetic analysis of the 56-kDa type-specific antigen gene, the majority (14 cases) were located in the Karp-related branch followed by the Gilliam-related (two cases), Kato-related (two cases), and TA763-related clades (one case). CONCLUSIONS/SIGNIFICANCE: Both the clinical and laboratory diagnoses of ST remain challenging at a tertiary hospital. Implementation of both serological and nucleic acid amplification assays covering endemic O. tsutsugamushi strains is essential. |
書誌情報 |
PLOS Neglected Tropical Diseases
巻 13,
号 12,
p. e0007928,
発行日 2019-12-05
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出版者 |
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出版者 |
Public Library of Science |
EISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
19352735 |
DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1371/journal.pntd.0007928 |
権利 |
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権利情報 |
c 2019 Katoh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
引用 |
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内容記述タイプ |
Other |
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内容記述 |
PLoS neglected tropical diseases, 13(12), e0007928; 2019 |