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Clinical characteristics of acute Q fever patients in South Korea and time from symptom onset to serologic diagnosis

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dc.contributor.authorHeo, JY-
dc.contributor.authorChoi, YW-
dc.contributor.authorKim, EJ-
dc.contributor.authorLee, SH-
dc.contributor.authorLim, SK-
dc.contributor.authorHwang, SD-
dc.contributor.authorLee, JY-
dc.contributor.authorJeong, HW-
dc.date.accessioned2022-01-14T05:18:11Z-
dc.date.available2022-01-14T05:18:11Z-
dc.date.issued2019-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/20050-
dc.description.abstractBACKGROUND: Acute Q fever usually presents as a nonspecific febrile illness, and its occurrence is rapidly increasing in South Korea. This study investigated the clinical characteristics of acute Q fever patients in South Korea and the time from symptom onset to serologic diagnosis. The clinical courses were examined according to antibiotic treatment.
METHODS: Data of patients diagnosed with acute Q fever at Chungbuk National University Hospital between January 2015 and February 2018 were retrospectively collected. Demographic and epidemiologic data were reviewed. The time from symptom onset to serologic diagnosis by an immunofluorescence assay (IFA) was analyzed. Clinical courses and the percentage of patients with a high phase I immunoglobulin G titer (>/= 1:1024) were compared between patients administered antibiotics with anti-Coxiella burnetii activity and patients not administered such antibiotics.
RESULTS: Forty-eight patients (median age: 51.5 years) were included. Most were male (95.8%) and had no history of animal contact (91.7%). The median time from illness onset to serologic diagnosis was 21 days. Thirty-nine patients received antibiotics with anti-C. burnetii activity. The length of hospital stay and fever duration did not significantly differ between patients who received antibiotics with anti-C. burnetii activity (7 and 15 days) and those who did not (5 and 8 days) (P = 0.110 and P = 0.137, respectively). The percentage of patients with a high phase I immunoglobulin G titer (>/= 1:1024) did not significantly differ between patients who received antibiotics with anti-C. burnetii activity and those who did not (P = 0.340).
CONCLUSIONS: Most acute Q fever patients had a nonspecific febrile illness with mild elevation of transaminases and no history of animal contact or occupational risk. The time from symptom onset to a positive IFA test was longer than the fever duration in most acute Q fever patients. Consequently, it may be difficult for clinicians to serologically diagnose acute Q fever. However, inappropriate antibiotic treatment was not associated with prolongation of symptoms or progression to chronic Q fever.
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dc.subject.MESHAnimals-
dc.subject.MESHAnti-Bacterial Agents-
dc.subject.MESHAntibodies, Bacterial-
dc.subject.MESHCoxiella burnetii-
dc.subject.MESHDelayed Diagnosis-
dc.subject.MESHFemale-
dc.subject.MESHFluorescent Antibody Technique-
dc.subject.MESHFollow-Up Studies-
dc.subject.MESHHospitalization-
dc.subject.MESHHospitals, University-
dc.subject.MESHHumans-
dc.subject.MESHImmunoglobulin G-
dc.subject.MESHLength of Stay-
dc.subject.MESHMale-
dc.subject.MESHMiddle Aged-
dc.subject.MESHQ Fever-
dc.subject.MESHRepublic of Korea-
dc.subject.MESHRetrospective Studies-
dc.subject.MESHSerologic Tests-
dc.titleClinical characteristics of acute Q fever patients in South Korea and time from symptom onset to serologic diagnosis-
dc.typeArticle-
dc.identifier.pmid31660875-
dc.identifier.urlhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6819606/-
dc.subject.keywordAcute Q fever-
dc.subject.keywordEpidemiology-
dc.subject.keywordIFA-
dc.subject.keywordSerologic diagnosis-
dc.contributor.affiliatedAuthorHeo, JY-
dc.contributor.affiliatedAuthorChoi, YW-
dc.contributor.affiliatedAuthorKim, EJ-
dc.type.localJournal Papers-
dc.identifier.doi10.1186/s12879-019-4479-0-
dc.citation.titleBMC infectious diseases-
dc.citation.volume19-
dc.citation.number1-
dc.citation.date2019-
dc.citation.startPage903-
dc.citation.endPage903-
dc.identifier.bibliographicCitationBMC infectious diseases, 19(1). : 903-903, 2019-
dc.identifier.eissn1471-2334-
dc.relation.journalidJ014712334-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Infectious Diseases
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