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https://www.readbyqxmd.com/read/28746227/diagnostic-yield-of-stool-culture-and-predictive-factors-for-positive-culture-in-patients-with-diarrheal-illness
#1
Jae Young Lee, Sun Young Cho, Hannah Sun Hae Hwang, Ja Young Ryu, Jongjin Lee, In Do Song, Beom Jin Kim, Jeong Wook Kim, Sae Kyung Chang, Chang Hwan Choi
We aimed to investigate the diagnostic yield of stool cultures and identify predictive factors for positive cultures in patients with diarrheal illness.A total of 13,327 patients who underwent stool cultures due to diarrheal illness were reviewed. Stool cultures were performed for enteric pathogens, including Salmonella, Shigella, Vibrio, Klebsiella oxytoca, and Yersinia. The culture-positive group was compared with the culture-negative group who were randomly selected from culture negative patients.A total of 196 patients (1...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28739115/a-recombinant-protein-of-salmonella-typhi-induces-humoral-and-cell-mediated-immune-responses-including-memory-responses
#2
Sayan Das, Rimi Chowdhury, Shubhamoy Ghosh, Santasabuj Das
Gram negative enteric bacteria, Salmonella enterica serovar Typhi (S. Typhi), the etiological agent of typhoid fever is a major public health problem in developing countries. While a permanent solution to the problem would require improved sanitation, food and water hygiene, controlling the infection by vaccination is urgently required due to the emergence of multidrug resistant strains in multiple countries. The currently licensed vaccines are moderately efficacious with limited applicability, and no recommended vaccines exist for younger children...
July 21, 2017: Vaccine
https://www.readbyqxmd.com/read/28730976/salmonella-intracellular-lifestyles-and-their-impact-on-host-to-host-transmission
#3
M Graciela Pucciarelli, Francisco García-Del Portillo
More than a century ago, infections by Salmonella were already associated with foodborne enteric diseases with high morbidity in humans and cattle. Intestinal inflammation and diarrhea are hallmarks of infections caused by nontyphoidal Salmonella serovars, and these pathologies facilitate pathogen transmission to the environment. In those early times, physicians and microbiologists also realized that typhoid and paratyphoid fever caused by some Salmonella serovars could be transmitted by "carriers," individuals outwardly healthy or at most suffering from some minor chronic complaint...
July 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28727726/a-cross-sectional-seroepidemiological-survey-of-typhoid-fever-in-fiji
#4
Conall H Watson, Stephen Baker, Colleen L Lau, Kitione Rawalai, Mere Taufa, Jerimaia Coriakula, Nga Tran Vu Thieu, Tan Trinh Van, Dung Tran Thi Ngoc, Niel Hens, John Lowry, Ruklanthi de Alwis, Jorge Cano, Kylie Jenkins, E Kim Mulholland, Eric J Nilles, Mike Kama, W John Edmunds
Fiji, an upper-middle income state in the Pacific Ocean, has experienced an increase in confirmed case notifications of enteric fever caused by Salmonella enterica serovar Typhi (S. Typhi). To characterize the epidemiology of typhoid exposure, we conducted a cross-sectional sero-epidemiological survey measuring IgG against the Vi antigen of S. Typhi to estimate the effect of age, ethnicity, and other variables on seroprevalence. Epidemiologically relevant cut-off titres were established using a mixed model analysis of data from recovering culture-confirmed typhoid cases...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28720886/spatio-temporal-variations-of-typhoid-and-paratyphoid-fevers-in-zhejiang-province-china-from-2005-to-2015
#5
Hua Gu, Wenjie Fan, Kui Liu, Shuwen Qin, Xiuyang Li, Jianmin Jiang, Enfu Chen, Yibiao Zhou, Qingwu Jiang
Typhoid and paratyphoid are two common enteric infectious diseases with serious gastrointestinal symptoms. Data was collected of the registered cases in Zhejiang Province from 2005 to 2015. The epidemiological characteristics were investigated and high-risk regions were detected with descriptive epidemiological methods and in-depth spatio-temporal statistics. A sharp decline in the incidences of both diseases was observed. The seasonal patterns were identified with typhoid and paratyphoid, one in summer from May to September was observed from 2005 to 2010 and the other lesser one in spring from January to March only observed from 2005 to 2007...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28674145/the-strataa-study-protocol-a-programme-to-assess-the-burden-of-enteric-fever-in-bangladesh-malawi-and-nepal-using-prospective-population-census-passive-surveillance-serological-studies-and-healthcare-utilisation-surveys
#6
Thomas C Darton, James E Meiring, Susan Tonks, Md Arifuzzaman Khan, Farhana Khanam, Mila Shakya, Deus Thindwa, Stephen Baker, Buddha Basnyat, John D Clemens, Gordon Dougan, Christiane Dolecek, Sarah J Dunstan, Melita A Gordon, Robert S Heyderman, Kathryn E Holt, Virginia E Pitzer, Firdausi Qadri, K Zaman, Andrew J Pollard
INTRODUCTION: Invasive infections caused by Salmonella enterica serovar Typhi and Paratyphi A are estimated to account for 12-27 million febrile illness episodes worldwide annually. Determining the true burden of typhoidal Salmonellae infections is hindered by lack of population-based studies and adequate laboratory diagnostics.The Strategic Typhoid alliance across Africa and Asia study takes a systematic approach to measuring the age-stratified burden of clinical and subclinical disease caused by typhoidal Salmonellae infections at three high-incidence urban sites in Africa and Asia...
July 2, 2017: BMJ Open
https://www.readbyqxmd.com/read/28658852/severe-puerperal-sepsis-a-simmering-menace
#7
Sheeba Marwah, Sonam R Topden, Manjula Sharma, Ritin Mohindra, Pratima Mittal
INTRODUCTION: Even decades after the development of effective low-cost antibiotics, sepsis persists as the foremost cause of preventable maternal death worldwide. In developing countries like India, where the paramount impediment to intervention is poverty, maternal mortality due to sepsis is a continuing representation of maternal health inequality. AIM: To determine the incidence, risk factors and mortality in women presenting with puerperal sepsis in a tertiary care health facility in India...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658831/enteric-cholestatic-hepatitis-with-ascites-a-rare-entity
#8
Samarth Virmani, Rama Bhat, Raghavendra Rao, Savio Dsouza, Nitin Bhat
Typhoid fever is a very common illness in developing countries. Patients most often present with a history of fever, vomiting, anorexia, abdominal pain, etc. Rarely there is hepatic involvement due to the disease process. This is a case report of a 26-year-old male who had presented with fever, jaundice and ascites. The widal titres were found to be within normal limits (1:80) however the patient was found to have Salmonella typhi on ascitic fluid culture. The patient was treated with the appropriate antibiotics and was later discharged...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28656474/dissecting-kawasaki-disease-a-state-of-the-art-review
#9
REVIEW
S M Dietz, D van Stijn, D Burgner, M Levin, I M Kuipers, B A Hutten, T W Kuijpers
Kawasaki disease (KD) is a pediatric vasculitis with coronary artery aneurysms (CAA) as its main complication. The diagnosis is based on the presence of persistent fever and clinical features including exanthema, lymphadenopathy, conjunctival injection, and changes to the mucosae and extremities. Although the etiology remains unknown, the current consensus is that it is likely caused by an (infectious) trigger initiating an abnormal immune response in genetically predisposed children. Treatment consists of high dose intravenous immunoglobulin (IVIG) and is directed at preventing the development of CAA...
June 27, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28645238/new-world-arenavirus-biology
#10
Nicolás Sarute, Susan R Ross
Hemorrhagic fevers caused by viruses were identified in the late 1950s in South America. These viruses have existed in their hosts, the New World rodents, for millions of years. Their emergence as infectious agents in humans coincided with changes in the environment and farming practices that caused explosions in their host rodent populations. Zoonosis into humans likely occurs because the pathogenic New World arenaviruses use human transferrin receptor 1 to enter cells. The mortality rate after infection with these viruses is high, but the mechanism by which disease is induced is still not clear...
June 23, 2017: Annual Review of Virology
https://www.readbyqxmd.com/read/28644847/role-of-classic-signs-as-diagnostic-predictors-for-enteric-fever-among-returned-travellers-relative-bradycardia-and-eosinopenia
#11
Takashi Matono, Satoshi Kutsuna, Yasuyuki Kato, Yuichi Katanami, Kei Yamamoto, Nozomi Takeshita, Kayoko Hayakawa, Shuzo Kanagawa, Mitsuo Kaku, Norio Ohmagari
BACKGROUND: The lack of characteristic clinical findings and accurate diagnostic tools has made the diagnosis of enteric fever difficult. We evaluated the classic signs of relative bradycardia and eosinopenia as diagnostic predictors for enteric fever among travellers who had returned from the tropics or subtropics. METHODS: This matched case-control study used data from 2006 to 2015 for culture-proven enteric fever patients as cases. Febrile patients (>38.3°C) with non-enteric fever, who had returned from the tropics or subtropics, were matched to the cases in a 1:3 ratio by age (±3 years), sex, and year of diagnosis as controls...
2017: PloS One
https://www.readbyqxmd.com/read/28639958/pediatric-jellyfish-envenomation-in-the-mediterranean-sea
#12
Miguel Glatstein, Dikla Adir, Bella Galil, Dennis Scolnik, Ayelet Rimon, Dikla Pivko-Levy, Christopher Hoyte
BACKGROUND: Several species of jellyfish native to the western Indian Ocean have entered the Mediterranean Sea through the Suez Canal. Since the late 1980s, each summer Rhopilema nomadica forms swarms as long as 100 km in the southeastern Levant and since the millennium aggregations of additional nonnative jellyfish have been sighted. The aim of this study was to evaluate children seen in the emergency department after jellyfish envenomations and to establish patterns of toxicity associated with this organism...
June 20, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28637484/seasonal-and-geographical-distribution-of-bacillary-dysentery-shigellosis-and-associated-climate-risk-factors-in-kon-tam-province-in-vietnam-from-1999-to-2013
#13
Hu Suk Lee, T T Ha Hoang, Phuc Pham-Duc, Mihye Lee, Delia Grace, Dac Cam Phung, Vu Minh Thuc, Hung Nguyen-Viet
BACKGROUND: Bacillary dysentery (BD) is an acute bacterial infection of the intestine caused by Shigella spp., with clinical symptoms ranging from fever to bloody diarrhoea to abdominal cramps to tenesmus. In Vietnam, enteric bacterial pathogens are an important cause of diarrhoea and most cases in children under 5 years of age are due to Shigella strains. The serogroups S. flexneri and S. sonnei are considered to be the most common. The main objective of this study was to, for the first time, assess the seasonal patterns and geographic distribution of BD in Vietnam, and to determine the climate risk factors associated with the incidence of BD in Kon Tum Province, where the highest rate of bacillary dysentery was observed from 1999 to 2013...
June 21, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28630845/multi-foci-salmonella-enteritis-osteomyelitis-of-thoracic-spine-with-pleural-effusion-and-fatal-outcome-a-unique-case-presentation-and-review-of-the-literature
#14
Ioannis Papaioannou, Andreas Baikousis, Panagiotis Korovessis
INTRODUCTION: A case of thoracic vertebral osteomyelitis due to Salmonella enteritis (SE) in an immunocompetent patient is reported. This is the third case in the literature of SE thoracic vertebral osteomyelitis, but the first one with this multi-foci presentation and finally fatal outcome due to meningoencephalitis. Further data that makes our case unique are the absence of fever (body temperature: 37.4°C) and gastrointestinal disorders. CASE REPORT: A 57-year-old male patient initially presented with thoracic pain, dyspnea, and knee pain...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28630073/new-insights-into-the-roles-of-lpf-and-stg-fimbriae-in-salmonella-interactions-with-enterocytes-and-m-cells
#15
Amanda M Gonzales, Shyra Wilde, Kenneth L Roland
Salmonella enterica serovar Typhi causes the systemic disease typhoid fever. After ingestion, it adheres to and invades the host epithelium while evading the host innate immune response, causing little if any inflammation. Conversely, S Typhimurium causes gastroenteritis in humans and thrives in the inflamed gut. Upon entering the host, S Typhimurium preferentially colonizes Peyer's patches, a lymphoid organ in which microfold cells (M cells) overlay an arrangement of B cells, T cells, and antigen presenting cells...
June 19, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28628220/importance-of-endothelial-dysfunction-biomarkers-in-patients-with-crimean-congo-hemorrhagic-fever
#16
Mustafa Arslan, Gürdal Yilmaz, Ahmet Mentese, Hülya Yilmaz, S Caner Karahan, Iftihar Koksal
BACKGROUND: The pathogenesis of the Crimean-Congo hemorrhagic fever (CCHF) and the cause of the hemorrhage are not yet fully understood. However, the endothelium plays a key role in the pathogenesis. The purpose of this study was to investigate endothelial dysfunction markers [asymmetrical dimethyl arginine(ADMA), endothelin 1(ET-1), thrombomodulin(TM), von Willebrand factor(vWf) and intercellular adhesion molecule(ICAM-1)] in serum in patients with CCHF and their associations with hemorrhage...
June 19, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28611166/cytomegalovirus-duodenitis-in-immunocompetent-patients-what-else-should-we-look-for
#17
Dalila Costa, Dália Fernandes, Antónia Furtado, Andre Santa Cruz
Cytomegalovirus (CMV) infection is a well-recognised complication of immunodeficiency, although the burden of CMV disease in immunocompetent adults is still unknown. We present the case of a 54-year-old male patient admitted due to severe diarrhoea, epigastric pain and fever. Initial diagnostic workup revealed pericardial and pleural effusion, enlarged abdominal lymph nodes and mild elevation of liver enzymes. CMV serology was IgM positive, and upper endoscopy revealed proximal enteritis. Histology and immunohistochemistry of duodenal samples confirmed CMV disease...
June 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28603698/crimean-congo-hemorrhagic-fever-tick-host-virus-interactions
#18
REVIEW
Anna Papa, Katerina Tsergouli, Katerina Tsioka, Ali Mirazimi
Crimean-Congo hemorrhagic fever virus (CCHFV) is transmitted to humans by bite of infected ticks or by direct contact with blood or tissues of viremic patients or animals. It causes to humans a severe disease with fatality up to 30%. The current knowledge about the vector-host-CCHFV interactions is very limited due to the high-level containment required for CCHFV studies. Among ticks, Hyalomma spp. are considered the most competent virus vectors. CCHFV evades the tick immune response, and following its replication in the lining of the tick's midgut, it is disseminated by the hemolymph in the salivary glands and reproductive organs...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28590238/what-were-the-risk-factors-and-trends-in-antimicrobial-resistance-for-enteric-fever-in-london-2005-2012
#19
Jayshree Dave, Fiona Warburton, Joanne Freedman, Elizabeth de Pinna, Kathie Grant, Armine Sefton, Emma Crawley-Boevey, Gauri Godbole, Richard Holliman, Sooria Balasegaram
PURPOSE: A study was undertaken to determine the risk factors and trends in antimicrobial resistance for enteric fever. METHODOLOGY: Demographic, antimicrobial susceptibility, typing and epidemiological data were examined for 2005-2012 in patients with enteric fever in London. Single and multivariable logistic regression was used to determine the risk factors associated with antibiotic resistance. RESULTS: 453 cases with Salmonella enterica subsp...
June 8, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28587154/redistribution-of-endosomal-membranes-to-the-african-swine-fever-virus-replication-site
#20
Miguel Ángel Cuesta-Geijo, Lucía Barrado-Gil, Inmaculada Galindo, Raquel Muñoz-Moreno, Covadonga Alonso
African swine fever virus (ASFV) infection causes endosomal reorganization. Here, we show that the virus causes endosomal congregation close to the nucleus as the infection progresses, which is necessary to build a compact viral replication organelle. ASFV enters the cell by the endosomal pathway and reaches multivesicular late endosomes. Upon uncoating and fusion, the virus should exit to the cytosol to start replication. ASFV remodels endosomal traffic and redistributes endosomal membranes to the viral replication site...
June 1, 2017: Viruses
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