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https://www.readbyqxmd.com/read/28810833/population-effectiveness-of-the-pentavalent-and-monovalent-rotavirus-vaccines-a-systematic-review-and-meta-analysis-of-observational-studies
#1
Daniel Hungerford, Katie Smith, Angela Tucker, Miren Iturriza-Gómara, Roberto Vivancos, Catherine McLeonard, Nigel A Cunliffe, Neil French
BACKGROUND: Rotavirus was the leading cause of acute gastroenteritis (AGE) in infants and young children prior to the introduction of routine vaccination. Since 2006 there have been two licensed vaccines available; with successful clinical trials leading the World Health Organization to recommend rotavirus vaccination for all children worldwide. In order to inform immunisation policy we have conducted a systematic review and meta-analysis of observation studies to assess population effectiveness against acute gastroenteritis...
August 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28807916/inhibition-of-calcineurin-or-impdh-exerts-moderate-to-potent-antiviral-activity-against-norovirus-replication
#2
Wen Dang, Yuebang Yin, Yijin Wang, Wenshi Wang, Junhong Su, Dave Sprengers, Luc J W van der Laan, Krzysztof Felczak, Krzysztof W Pankiewicz, Kyeong-Ok Chang, Marion P G Koopmans, Herold J Metselaar, Maikel P Peppelenbosch, Qiuwei Pan
Norovirus is a major cause of acute gastroenteritis worldwide and has emerged as an important issue of chronic infection in transplantation patients. Since no approved antiviral is available, we evaluated the effects of different immunosuppressants and ribavirin on norovirus and explored their mechanism-of-actions by using a human norovirus (HuNV) replicon-harboring model and a surrogate murine norovirus (MNV) infectious model. Roles of corresponding drug targets were investigated by gain- or loss-of-function approaches...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28807813/norovirus-loads-in-stool-specimens-of-cancer-patients-with-norovirus-gastroenteritis
#3
Taojun He, Tracy A McMillen, Yuanyuan Qiu, Liang Hua Chen, Xuedong Lu, Xiao-Li Pang, Mini Kamboj, Yi-Wei Tang
In immunocompromised patients with norovirus (NoV) gastroenteritis, the relationship between fecal NoV load and clinical complications has not been examined. In this study, a validated real-time quantitative PCR (qPCR) assay was used to determine viral loads NoV genogroup I and II (GI and GII) in NoV positive stool specimens of cancer patients. A total of 234 specimens from 152 patients were positive for NoV, including 201 of GII and 33 of GI. Geometric mean of logarithmic copies (GMLC) per gram of stool (w/w) of NoV-GII were 9...
August 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28805733/first-detection-of-rotavirus-group-c-in-asymptomatic-pigs-of-smallholder-farms-in-east-africa
#4
Joshua Oluoch Amimo, Eunice Magoma Machuka, Edward Okoth
Abstract: Group C rotavirus (RVC) has been described to be a causative agent of gastroenteritis in humans and animals including pigs, cows, and dogs. Fecal samples collected from asymptomatic pigs in smallholder swine farms in Kenya and Uganda were screened for the presence of group C rotaviruses (RVC) using a reverse transcription-polymerase chain reaction assay. A total of 446 samples were tested and 37 were positive (8.3%). A significantly larger (p < 0.05) number of RVC-positive samples was detected in groups of older pigs (5-6 months) than in younger piglets (1-2 months)...
August 14, 2017: Pathogens
https://www.readbyqxmd.com/read/28802994/expression-and-purification-of-norovirus-virus-like-particles-in-escherichia-coli-and-their-immunogenicity-in-mice
#5
Yuqi Huo, Xin Wan, Tong Ling, Jie Wu, Wenhui Wang, Shuo Shen
Norovirus (NoV) virus like particles (VLPs) produced in Spodoptera frugiperda (Sf9) cells have been tested in human volunteers as vaccine candidate and were shown to be protective against NoV induced acute gastroenteritis. In this study, prevailing Sydney-2012-like NoV major capsid protein gene with or without N-terminal deletions (N26 and N38, 26 and 38 amino acids deleted from N terminus,respectively) were sub-cloned into prokaryotic expression vector, pCold III and pCold IV. Soluble and insoluble proteins were detected for both vectors after induction and higher levels of protein expression were observed for constructs pCold III-N26 and pCold III-N38...
August 9, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28794420/interrelationship-of-rotavirus-infection-and-creatine-kinase-mb-isoenzyme-levels-in-children-hospitalized-with-acute-gastroenteritis-in-guangzhou-china-2012-2015
#6
Jianbin Zheng, Haiqing Zheng, Ramit Kumar Gupta, Huixian Li, Hui Shi, Liyan Pan, Sitang Gong, Huiying Liang
Elevated levels of Creatine Kinase-MB (CK-MB) Isoenzyme are a common phenomenon among rotavirus (RV) diarrhea. However, few studies have addressed this issue using large sample size. In current study, 1,118 children (age <5 years) hospitalized with diarrhea in Guangzhou Women and Children's Medical Center from 2012 to 2015 were finally included. Changing pattern of CK-MB and its relationship with RV-infection were analyzed and characterized. Multivariate linear regression models showed that RV-positive cases had a 28% rise in CK-MB compared to RV-negative cases (OR = 1...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794036/persistent-tgev-infection-enhances-etec-k88-adhesion-by-promoting-epithelial-mesenchymal-transition-in-intestinal-epithelial-cells
#7
Lu Xia, Lei Dai, Qinghua Yu, Qian Yang
Transmissible gastroenteritis virus (TGEV) is a coronavirus, characterized by diarrhea, high morbidity, and the mortality is 100% in piglets less than 2 weeks old. Pigs infected with TGEV are often suffer secondary infection with other pathogens, which aggravates the severity of diarrhea, but the mechanisms remain unknown. Here, we hypothesized that persistent TGEV infection stimulates the epithelial-mesenchymal transition (EMT), thereby generating cells that more easily adhere to enterotoxigenic Escherichia coli (ETEC)...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28792716/a-3-month-old-child-with-acute-gastroenteritis-with-enterovirus-d68-detected-from-stool-specimen
#8
Ngan T K Pham, Aksara Thongprachum, Tsuneyoshi Baba, Shoko Okitsu, Quang D Trinh, Shihoko Komine-Aizawa, Hiroyuki Shimizu, Satoshi Hayakawa, Hiroshi Ushijima
Enterovirus D68 (EV-D68) is known to be causative agent of mild to severe upper and lower respiratory illnesses in sporadic cases and outbreaks. We present a case report of a 3-month-old child with acute gastroenteritis who visited a pediatric clinic in Kyushu area in Japan in 2015. A stool sample collected from the patient was screened for diarrheal viruses by multiplex RT-PCR. The result showed that the sample was positive only for enterovirus, and EV-D68 clade B3 was identified by sequence analysis of the viral protein 1 gene...
July 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28790133/detection-of-acute-gastroenteritis-etiology-in-hospitalized-young-children-associated-factors-and-outcomes
#9
Jamie M Pinto, Anna Petrova
BACKGROUND: The decision to test for the etiology of diarrhea is a challenging question for practicing pediatricians. METHODS: The main goal of this retrospective cohort study was to identify factors associated with testing for and diagnosis of rotavirus, Clostridium difficile, or other bacterial infections, as well as the length of stay (LOS) for children with acute gastroenteritis who were hospitalized at a single institution. Patients aged 6 to 60 months with acute diarrhea (<14 days) and no underlying gastrointestinal conditions were included...
August 8, 2017: Hospital Pediatrics
https://www.readbyqxmd.com/read/28790023/identifying-potential-norovirus-epidemics-in-china-via-internet-surveillance
#10
Kui Liu, Sichao Huang, Zi-Ping Miao, Bin Chen, Tao Jiang, Gaofeng Cai, Zhenggang Jiang, Yongdi Chen, Zhengting Wang, Hua Gu, Chengliang Chai, Jianmin Jiang
BACKGROUND: Norovirus is a common virus that causes acute gastroenteritis worldwide, but a monitoring system for norovirus is unavailable in China. OBJECTIVE: We aimed to identify norovirus epidemics through Internet surveillance and construct an appropriate model to predict potential norovirus infections. METHODS: The norovirus-related data of a selected outbreak in Jiaxing Municipality, Zhejiang Province of China, in 2014 were collected from immediate epidemiological investigation, and the Internet search volume, as indicated by the Baidu Index, was acquired from the Baidu search engine...
August 8, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28783750/virulence-of-invasive-salmonella-typhimurium-st313-in-animal-models-of-infection
#11
Girish Ramachandran, Aruna Panda, Ellen E Higginson, Eugene Ateh, Michael M Lipsky, Sunil Sen, Courtney A Matson, Jasnehta Permala-Booth, Louis J DeTolla, Sharon M Tennant
Salmonella Typhimurium sequence type (ST) 313 produces septicemia in infants in sub-Saharan Africa. Although there are known genetic and phenotypic differences between ST313 strains and gastroenteritis-associated ST19 strains, conflicting data about the in vivo virulence of ST313 strains have been reported. To resolve these differences, we tested clinical Salmonella Typhimurium ST313 and ST19 strains in murine and rhesus macaque infection models. The 50% lethal dose (LD50) was determined for three Salmonella Typhimurium ST19 and ST313 strains in mice...
August 4, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28783578/genetic-characterisation-of-norovirus-strains-in-outpatient-children-from-rural-communities-of-vhembe-district-south-africa-2014-2015
#12
Jean Pierre Kabue, Emma Meader, Paul R Hunter, Natasha Potgieter
BACKGROUND: Norovirus (NoV) is now the most common cause of both outbreaks and sporadic non-bacterial gastroenteritis worldwide. However, data supporting the role of NoV in diarrheal disease are limited in the African continent. OBJECTIVES: This study investigates the distribution of NoV genotypes circulating in outpatient children from rural communities of Vhembe district/South Africa. STUDY DESIGN: Stool specimens were collected from children under five years of age with diarrhea, and controls without diarrhea, between July 2014 and April 2015...
July 21, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28782648/whole-genome-sequencing-of-campylobacter-jejuni-isolated-from-danish-routine-human-stool-samples-reveals-surprising-degree-of-clustering
#13
K G Joensen, K G Kuhn, L Müller, J T Björkman, M Torpdahl, J Engberg, H M Holt, H L Nielsen, A M Petersen, S Ethelberg, E M Nielsen
OBJECTIVES: Outbreaks of Campylobacter are traditionally considered to be rare, however rather than being the true nature of the disease, this may reflect our present inability to detect them. The aim of this study was to determine the genetic and epidemiological degree of clustering among Campylobacter jejuni isolates from Danish patients. METHODS: Whole-genome sequencing (WGS) was applied to 245 C. jejuni isolates from patients with domestically acquired infection over a 9-month period in 2015 and 2016...
August 3, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28782273/up-regulation-of-transient-receptor-potential-vanilloid-trpv-and-down-regulation-of-brain-derived-neurotrophic-factor-bdnf-expression-in-patients-with-functional-dyspepsia-fd
#14
C K Y Cheung, L L Lan, M Kyaw, A D P Mak, A Chan, Y Chan, J C Y Wu
BACKGROUND: The role of immune activation in Functional Dyspepsia (FD) patients without previous infection is unclear. We compare the gastric and circulating brain-derived neurotropic factor (BDNF), receptor potential vanilloid type (TRPV) families and various cytokines in FD patients. METHODS: Consecutive adult FD patients (Rome III) with no recent history of gastroenteritis and asymptomatic healthy controls were recruited for upper endoscopy. Subjects with GERD and IBS as predominant symptoms, diabetes mellitus, current or previous Helicobacter pylori infection, psychiatric illness and recent use of NSAID or PPI were excluded...
August 7, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28781938/foodborne-infectious-diseases-mediated-by-inappropriate-infection-control-in-food-service-businesses-and-relevant-countermeasures-in-korea
#15
REVIEW
Jong Myong Park, Young-Hyun You, Hyun-Min Cho, Ji Won Hong, Sa-Youl Ghim
OBJECTIVES: The objective of this review is to propose an appropriate course of action for improving the guidelines followed by food handlers for control of infection. For this purpose, previous epidemiological reports related to acute gastroenteritis in food service businesses mediated by food handlers were intensively analyzed. METHODS: Relevant studies were identified in international databases. We selected eligible papers reporting foodborne infectious disease outbreaks...
June 2017: Osong Public Health and Research Perspectives
https://www.readbyqxmd.com/read/28780116/impact-of-rotavirus-vaccination-on-rotavirus-and-all-cause-gastroenteritis-in-peri-urban-kenyan-children
#16
Ernest Apondi Wandera, Shah Mohammad, Martin Bundi, Satoshi Komoto, James Nyangao, Cyrus Kathiiko, Erick Odoyo, Gabriel Miring'u, Koki Taniguchi, Yoshio Ichinose
A monovalent rotavirus vaccine (RV1) was introduced into the National Immunization Program in Kenya in July 2014. We examined the impact of the vaccine on hospitalization for all-cause acute gastroenteritis (AGE) and rotavirus-specific AGE and strain distribution at a large referral hospital which serves a predominantly peri-urban population in Central Kenya. Data on rotavirus AGE and strain distribution were derived from ongoing hospital-based AGE surveillance. Hospital administrative data were used to compare trends in all-cause AGE...
August 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28777953/sleep-duration-and-its-association-with-demographics-lifestyle-factors-poor-mental-health-and-chronic-diseases-in-older-chinese-adults
#17
Shibin Wang, Yanhua Wu, Gabor S Ungvari, Chee H Ng, Brent P Forester, Jennifer R Gatchel, Helen F K Chiu, Changgui Kou, Yingli Fu, Yue Qi, Yaqin Yu, Bo Li, Yu-Tao Xiang
This study investigated the total sleep time (TST) and its associated factors in an older Chinese adult population. Multistage stratified cluster sampling was used in this cross-sectional study. A total of 4,115 older adults aged 60 to 79 years were selected and interviewed. Sleep duration was classified as short ( 8h per day) and medium sleep (7-8h per day). The total mean sleep time was 6.86±1.75h. Short and long sleepers accounted for 45.2% and 14.8% of the sample, respectively. Multivariate logistic regression analysis revealed that inadequate fruit intake and poor mental health were positively associated with short sleep, and married/cohabitation status and living in rural areas was negatively associated with short sleep...
July 19, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28777099/inflammatory-bowel-diseases-review-of-known-environmental-protective-and-risk-factors-involved
#18
Kimberley W J van der Sloot, Marzyeh Amini, Vera Peters, Gerard Dijkstra, Behrooz Z Alizadeh
Inflammatory bowel diseases consisting of Crohn's disease and ulcerative colitis are chronic inflammatory diseases of the gastrointestinal tract. In addition to genetic susceptibility and disturbances of the microbiome, environmental exposures forming the exposome play an important role. Starting at birth, the cumulative effect of different environmental exposures combined with a predetermined genetic susceptibility is thought to cause inflammatory bowel disease. All these environmental factors are part of a Western lifestyle, suiting the high incidence rates in Europe and the United States...
August 2, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28772169/astrovirus-infection-in-hospitalized-children-molecular-clinical-and-epidemiological-features
#19
Jones Anderson Monteiro Siqueira, Darleise de Souza Oliveira, Thaís Cristina Nascimento de Carvalho, Thayara Morais Portal, Maria Cleonice Aguiar Justino, Luciana Damascena da Silva, Hugo Reis Resque, Yvone Benchimol Gabbay
BACKGROUND: Astrovirus (HAstV) is a common viral pathogen that causes gastroenteritis worldwide. It is classified into eight classical human types (HAstV-1/8) and seven other less prevalent types, described as HAstV VA1, VA2, VA3, VA4, MLB-1, MLB-2 and MLB-3. During outbreaks, the elderly and children are the most affected, and the spread of the virus is associated with person-to-person contact, food ingestion and contaminated water. OBJECTIVES: The aim of the present study was to investigate the prevalence of infection and genetic diversity of HAstV strains...
July 25, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28771145/waterborne-disease-outbreak-detection-an-integrated-approach-using-health-administrative-databases
#20
S Coly, N Vincent, E Vaissiere, M Charras-Garrido, A Gallay, C Ducrot, D Mouly
Hundreds of waterborne disease outbreaks (WBDO) of acute gastroenteritis (AGI) due to contaminated tap water are reported in developed countries each year. Such outbreaks are probably under-detected. The aim of our study was to develop an integrated approach to detect and study clusters of AGI in geographical areas with homogeneous exposure to drinking water. Data for the number of AGI cases are available at the municipality level while exposure to tap water depends on drinking water networks (DWN). These two geographical units do not systematically overlap...
August 2017: Journal of Water and Health
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