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Japanese Journal of Infectious Diseases

Satsuki Kakiuchi, Masanori Tsuji, Hidekazu Nishimura, Lixing Wang, Mutsuyo Takayama-Ito, Hitomi Kinoshita, Chang-Kweng Lim, Shuichi Taniguchi, Akira Oka, Masashi Mizuguchi, Masayuki Saijo
  There have been few prospective and comprehensive surveillance studies on the respiratory viral infections (RVI) among patients undergoing hematopoietic stem cell transplantation (HSCT). A 2-year prospective cohort surveillance study of symptomatic and asymptomatic RVIs in hospitalized HSCT patients was performed. Oropharyngeal (OP) swab samples were serially collected each week from 1 week before and up to 100 days after HSCT and were tested for virus isolation with cell culture-based viral isolation (CC-based VI) and a multiplexed PCR (MPCR)...
December 26, 2017: Japanese Journal of Infectious Diseases
Kyoichi Saito, Shiro Endo, Makoto Katsumi, Chiyuki Ishizawa, Yuko Fujikawa, Shinya Inomata, Masahiro Toyokawa, Mitsuo Kaku
  The FilmArray (FA) is a multiplex polymerase chain reaction (PCR)-based desktop microbial detection system. The Blood Culture Identification (BCID) panel is an adaptable panel for the FA, which diagnoses sepsis or/and systemic infections by detecting 14 bacterial species, 4 bacterial genera, 1 bacterial family, 5 yeast species, and 3 antimicrobial resistance genes (mecA, KPC, and vanA/B) from positive blood cultures within 1 hour. We retrospectively evaluated the FA-BCID panel, using 54 positive blood cultures, from which 57 bacteria and 3 yeasts were identified through matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) analysis...
December 26, 2017: Japanese Journal of Infectious Diseases
Yaohua Xue, Heping Zheng, Weiming Tang, Zhida Mai, Jinmei Huang, Shujie Huang, Xiaolin Qin, Lei Chen, Lei Zheng
Studies rarely assessed the genotype distribution of chlamydia trachomatis (CT) in urine among men attending STD clinics (MSCs) in China. This study aimed to investigate the prevalence and molecular epidemiology of CT infection by examining urine samples among MSCs from different geographic areas of Guangdong province, China. A cross-sectional study was conducted among MSCs from ten HIV sentinel surveillance sites in Guangdong province. CT DNA in men urine samples were extracted and detected by using the Roche cobas® 4800 CT/NG...
December 26, 2017: Japanese Journal of Infectious Diseases
Pengcheng Liu, Menghua Xu, Leiyan He, Liyun Su, Aimin Wang, Pan Fu, Lijuan Lu, Chuanqing Wang, Jin Xu
This study aimed to explore the epidemiology of pathogens in children who were hospitalized with lower respiratory tract infections (LRTIs) at the Children's Hospital of Fudan University, Shanghai, China. Children aged less than 18 years who were hospitalized with LRTIs were recruited from January 2013 to December 2015. Respiratory specimens were collected for the detection of common respiratory viruses, atypical bacteria and bacteria using current laboratory diagnostic tests. The epidemiological characteristics of the respiratory pathogens were analysed...
December 26, 2017: Japanese Journal of Infectious Diseases
Atsushi Kaida, Nobuhiro Iritani, Daiki Kanbayashi, Seiji P Yamamoto, Yuki Hirai, Noritaka Hakui, Ryoko Fujimori, Hiromi Mori, Hidetetsu Hirokawa, Jun Ogasawara, Hideyuki Kubo
  Measles is a highly contagious infection caused by the measles virus (MV). In this study, long-term surveillance was performed in order to survey MV prevalence. A total of 417 patients diagnosed with or suspected of having measles were tested for MV between January 2007 and December 2016 in Osaka City, Japan. Reverse transcription-polymerase chain reaction (RT-PCR)-based testing of clinical specimens showed that 54 patients (12.9%) were MV-positive. An MV epidemic occurred in 2007, in which all detected MV strains were of genotype D5, an epidemic strain in Japan at that time...
December 26, 2017: Japanese Journal of Infectious Diseases
Toshihiko Sunahara
Aedes albopictus is an important vector of dengue fever and tends to ambush blood host in a single place. Thus, host contact frequency may affect the bite rate and risk of disease outbreak, although no studies have examined these parameters. The present study used a simple model to clarify the fundamental relationship between host availability, bite rate, and risk of dengue outbreaks in non-endemic areas. A hypothetical isolated mosquito population was divided into "ambush" and "resting" subpopulations, and human hosts were modeled as visiting mosquito population at constant intervals...
December 26, 2017: Japanese Journal of Infectious Diseases
Hiromi Nakamura, Atsushi Iguchi, Tomofumi Maehara, Kyohei Fujiwara, Atsushi Fujiwara, Jun Ogasawara
To determine the infection source, route, and extent of outbreak, it is important to subtype Shiga toxin-producing Escherichia coli (STEC) isolates belonging to the same serotype for clustering into clonally related groups. In this study, we compared three molecular subtyping methods, multi-locus sequence typing (MLST), pulsed-field gel electrophoresis (PFGE), and multiple-locus variable number of tandem repeat analysis (MLVA), using O157 and non-O157 STEC isolated from Japanese beef cattle. A total of 73 STEC isolates belonging to 9 O-serogroups were used...
December 26, 2017: Japanese Journal of Infectious Diseases
Hiroki Ozawa, Shigeru Tajima, Eri Nakayama, Kengo Kato, Akifumi Yamashita, Tsuyoshi Sekizuka, Makoto Kuroda, Shuzo Usuku
  Zika virus (ZIKV) infection has been documented within Central and South America, Asia, and Africa. Here we report the isolation of virus from a patient infected with ZIKV returning to Japan from the Dominican Republic. The ZIKV strain was imaged by electron microscopy and its complete genome sequence was analyzed. Phylogenetic analysis and molecular characterization revealed that the strain was of the Asian lineage, and carried two unique mutations in its NS5 region. These mutations are characteristic of strains that originated in the Dominican Republic and the USA in 2016...
December 26, 2017: Japanese Journal of Infectious Diseases
Pabitra Saha, Sudeep Ballav, Moytrey Chatterjee, Swagata Ganguly, Mayukh Sarker, Asit Kumar Biswas, Tulsi Pramanik, Nandita Basu, Ardhendu Kumar Maji
Emergence and spread of resistance among vectors against different insecticides is a serious problem for Japanese encephalitis (JE) control programme. Regular monitoring of susceptibility status of vector species to insecticides is important for formulating proper vector control measures. We have studied the susceptibility status of major JE vectors from northern West Bengal, against 4% DDT, 0.05% deltamethrin and 5% malathion. Two to three days old unfed female mosquitoes were subjected to susceptibility bioassay using WHO kit...
December 26, 2017: Japanese Journal of Infectious Diseases
Yoshimasa Sasaki, Mika Haruna, Masashi Uema, Mamoru Noda, Yukiko Yamada
  The number of reported cases of human hepatitis E virus (HEV) infection has increased since 2012. Pigs are considered an important source of viruses causing human HEV infection. It is possible that the prevalence of HEV in pigs at slaughter age (approximately six months old) has increased in the last decade. Therefore, we investigated the current prevalence of HEV in pigs in Japan. Although HEV RNA was detected in rectal content samples from pigs aged from one to five months, no HEV RNA was detected in any samples from six-month-old pigs...
December 26, 2017: Japanese Journal of Infectious Diseases
Chihiro Norizuki, Kumiko Kawamura, Jun-Ichi Wachino, Masahiro Suzuki, Noriyuki Nagano, Takaaki Kondo, Yoshichika Arakawa
We investigated the prevalence and characteristics of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli isolates from Japanese pigs. A total of 345 pig fecal specimens were collected from 30 farms in Aichi prefecture, Japan, between June 2015 and April 2016, and 22 unique ESBL-producing E. coli were isolated from 16 samples of eight farms. The ESBL types included CTX-M-15 (54.5%), CTX-M-55 (27.2%), CTX-M-3 (0.9%), and CTX-M-14 (0.9%). The predominant plasmid replicon type was IncN, and they carried blaCTX-M-55...
December 26, 2017: Japanese Journal of Infectious Diseases
Bibhuti Bhusan Pal, Smruti Ranjan Nayak, Hemant Kumar Khuntia
Cholera is an acute diarrhoeal disease caused by Vibrio cholerae O1 and O139 serogroups which are known to cause epidemics of cholera in Odisha. The present study has been envisaged to document the antibiotic resistance pattern among clinical isolates of both serogroups of V.cholerae O1 and O139 isolated during 2004-2013. Nine hundred nine isolates of V.cholerae were included in this study which were identified by standard procedures. Antibiotic sensitivity test was performed by disc diffusion method. The seasonality of cholera in this region indicated that there was one peak observed in the rainy season only...
December 26, 2017: Japanese Journal of Infectious Diseases
Wei Li, Bang-Yong Zhu, Shui-Qing Qin, Mao-Chun Yang, Ming Liang, Shao He, Huai-Zhong Chen, Quan Gan, Yin-Jie Huang, Jiang-Ping Wei, Ji-Zhao He, Zhen Chen, Jin Bu
Neisseria gonorrhoeae (N. gonorrhoeae) is a sexually transmitted pathogen popular worldwide with increased trend of resistance to antimicrobial treatment. We conducted this study to trace the antimicrobial susceptibilities of N. gonorrhoeae to penicillin, spectinomycin, ciprofloxacin, azithromycin, cefixime and ceftriaxone in Guangxi. Totally 303 NG isolates were sampled from patients infected with N. gonorrhoeae from five cities in Guangxi 2013-2015, and the antibiotic susceptibilities were tested by Agar dilution assay...
December 26, 2017: Japanese Journal of Infectious Diseases
Hend Ibrahim Shousha, Abubakr Hussein Awad, Dalia Abdelhamid Omran, Mayada Mohamed Elnegouly, Mahasen Mabrouk
  IL28 single nucleotide polymorphism (rs12979860) is an aetiology-independent predictor of hepatitis C virus (HCV) related hepatic fibrosis. Data mining is a method of predictive analysis which can explore tremendous volumes of information found in health records to discover hidden patterns and relationships. The study aims to evaluate and compare the prediction accuracy of APRI, FIB-4 versus data mining for prediction of HCV related advanced fibrosis. This retrospective study included 427 patients with chronic HCV...
December 26, 2017: Japanese Journal of Infectious Diseases
Tokiwa Toshihiro, Yuya Kobayashi, Ike Kazunori, Yasuyuki Morishima, Hiromu Sugiyama
No abstract text is available yet for this article.
December 26, 2017: Japanese Journal of Infectious Diseases
Yoshiko Yamamura, Yuka Mihara, Keigo Nakatani, Toshihiro Nishiguchi, Tadayoshi Ikebe
Streptococcus gallolyticus subsp. pasteurianus, previously recognized as S. bovis biotype II/2, is an uncommon but important cause of invasive infection in young infants. Here, we report the first case of ventriculitis unexpectedly found in the course of neonatal meningitis due to S. gallolyticus subsp. pasteurianus and review the literature. A 28-day-old Japanese boy presented with fever, lethargy, and irritability. S. bovis was isolated from blood and the cerebrospinal fluid culture and then was identified as S...
December 26, 2017: Japanese Journal of Infectious Diseases
Somjit Chaiwattanarungruengpaisan, Sarin Suwanpakdee, Nareerat Sangkachai, Tatiyanuch Chamsai, Kanokwan Taruyanon, Metawee Thongdee
  We collected water and soil samples from a waterfall in Thailand in order to investigate the presence of potential pathogenic Leptospira. Isolation of Leptospira was completely accomplished from all 17 environmental samples. Based on 16S rRNA gene sequence analysis, a diverse group of Leptospira species was recovered from waterfall samples including two pathogenic species; L. alstonii (5/17, 29%) and L. kmetyi (1/17, 6%), one intermediate species; L. wolffii (9/17, 53%) and two non-pathogenic species; L...
October 31, 2017: Japanese Journal of Infectious Diseases
Yu Suzuki, Junji Seto, Yoshitaka Shimotai, Tsutomu Itagaki, Yuriko Katsushima, Fumio Katsushima, Tatsuya Ikeda, Katsumi Mizuta, Seiji Hongo, Yoko Matsuzaki
Multiple-locus variable-number tandem-repeat analysis (MLVA) typing was performed of Mycoplasma pneumoniae strains isolated between 2004 and 2014 in Yamagata, Japan. The results were examined by combining P1 type and prevalence of macrolide resistance-associated mutations. Four-locus (Mpn13-16) MLVA classified 347 strains into nine MLVA types, including three major types: 3-5-6-2, 4-5-7-2, and 4-5-7-3. All type 3-5-6-2 strains (77 strains) were P1 type 2 variants (2a or 2c), while types 4-5-7-2 (181 strains) and 4-5-7-3 (75 strains) were P1 type 1...
October 31, 2017: Japanese Journal of Infectious Diseases
Takashi Matsumoto, Susilakanthi Nanayakkara, Devika Perera, Shinya Ushijima, Omala Wimalaratne, Akira Nishizono, Kamruddin Ahmed
Unlike the bats of New World, Old World bats are not considered to transmit rabies virus (RABV). Two RABV variants are circulating in Sri Lanka; one variant is circulating in dogs and other animals. The other variant has been identified in a wild civet. There is possibility that other variants are also circulating among the wild animals in Sri Lanka. Therefore we performed molecular characterization of the RABVs present in Sri Lankan wild animals. Samples from wild animals, dogs, cats and humans with suspected rabies submitted at the Department of Rabies Diagnosis and Research, Medical Research Institute (MRI), Colombo, Sri Lanka were used in this study...
October 31, 2017: Japanese Journal of Infectious Diseases
Mitsuru Oodate, Kouji Kimura, Hirotsugu Banno, Satoru Yokoyama, Wanchun Jin, Jun-Ichi Wachino, Yoshinori Hasegawa, Yoshichika Arakawa
Multidrug-resistant Streptococcus pneumoniae serogroup 19, including serotypes 19A and 19F, associated with clonal complex 320/271 (CC320/271), was previously shown to be predominant in many countries after the introduction of a seven-valent pneumococcal conjugate vaccine (PCV7). However, in Japan there has been no epidemiological research focused on penicillin-non-susceptible isolates after this event. Thus, we aimed to characterize penicillin-non-susceptible S. pneumoniae (PNSSP; penicillin minimum inhibitory concentration (MIC) ≥ 4...
October 31, 2017: Japanese Journal of Infectious Diseases
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