Detection of Bartonella quintana Infection among the Homeless Population in Tokyo, Japan, from 2013–2015
- 30 September 2021
- journal article
- research article
- Published by Editorial Committee of Japanese Journal of Infectious Diseases, National Institute of Infectious Dis in Japanese Journal of Infectious Diseases
- Vol. 74 (5), 411-415
- https://doi.org/10.7883/yoken.jjid.2020.505
Abstract
Several outbreaks of trench fever caused by Bartonella quintana, occurred in soldiers during World Wars I and II. Although the number of trench fever cases has been decreasing worldwide, the disease has been reported among the homeless population in both developing and developed countries. The current prevalence of B. quintana infection in Japan is unclear. We collected blood and body louse (Pediculus humanus humanus) samples from homeless inpatients who had body lice at the time of emergency hospitalization in Tokyo from January 2013 to March 2015. Patients were tested for B. quintana infections using culture method, polymerase chain reaction, and indirect immunofluorescence assay (IFA). Among the 29 patients tested, the presence of Bartonella spp. was confirmed by genomic sequencing of DNA extracted from the samples from 2 patients (blood culture performed for 13 out of 15 patients), and from body louse samples of 20 patients (69%). Immunoglobulin G against B. quintana was detected in 10 patients (34.5%) at a cut-off titer of 1:256 in IFA. B. quintana infection was detected in samples obtained between 2013 and 2015 in Tokyo and needs to be on the list of differential diagnoses performed for febrile homeless individuals.Keywords
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