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https://www.readbyqxmd.com/read/29463654/emergence-of-an-extensively-drug-resistant-salmonella-enterica-serovar-typhi-clone-harboring-a-promiscuous-plasmid-encoding-resistance-to-fluoroquinolones-and-third-generation-cephalosporins
#1
Elizabeth J Klemm, Sadia Shakoor, Andrew J Page, Farah Naz Qamar, Kim Judge, Dania K Saeed, Vanessa K Wong, Timothy J Dallman, Satheesh Nair, Stephen Baker, Ghazala Shaheen, Shahida Qureshi, Mohammad Tahir Yousafzai, Muhammad Khalid Saleem, Zahra Hasan, Gordon Dougan, Rumina Hasan
Antibiotic resistance is a major problem in Salmonella enterica serovar Typhi, the causative agent of typhoid. Multidrug-resistant (MDR) isolates are prevalent in parts of Asia and Africa and are often associated with the dominant H58 haplotype. Reduced susceptibility to fluoroquinolones is also widespread, and sporadic cases of resistance to third-generation cephalosporins or azithromycin have also been reported. Here, we report the first large-scale emergence and spread of a novel S Typhi clone harboring resistance to three first-line drugs (chloramphenicol, ampicillin, and trimethoprim-sulfamethoxazole) as well as fluoroquinolones and third-generation cephalosporins in Sindh, Pakistan, which we classify as extensively drug resistant (XDR)...
February 20, 2018: MBio
https://www.readbyqxmd.com/read/29449781/whole-genome-sequencing-of-multidrug-resistant-salmonella-enterica-serovar-typhimurium-isolated-from-humans-and-poultry-in-burkina-faso
#2
Assèta Kagambèga, Taru Lienemann, Jonathan G Frye, Nicolas Barro, Kaisa Haukka
Background: Multidrug-resistant Salmonella is an important cause of morbidity and mortality in developing countries. The aim of this study was to characterize and compare multidrug-resistant Salmonella enterica serovar Typhimurium isolates from patients and poultry feces. Methods: Salmonella strains were isolated from poultry and patients using standard bacteriological methods described in previous studies. The strains were serotype according to Kaufmann-White scheme and tested for antibiotic susceptibility to 12 different antimicrobial agents using the disk diffusion method...
2018: Tropical Medicine and Health
https://www.readbyqxmd.com/read/29432938/first-report-on-antimicrobial-resistance-and-molecular-characterization-of-salmonella-enterica-serotype-typhi-isolated-from-human-specimens-in-luanda-angola
#3
Moisés Francisco, Sofia Santos Costa, Adriana Belas, Jorge Ramos, Isabel Couto, Constança Pomba, Miguel Viveiros
OBJECTIVES: Typhoid fever is a common infection in Africa and in spite of scarce surveillance reports, its incidence is commonly considered high by the Angolan Health system. Drug-resistant Salmonella enterica serotype Typhi has emerged, turning antimicrobial susceptibility testing essential to provide clinical guidance. This is the first report analyzing antimicrobial resistance patterns and population structure of the few S. enterica ser. Typhi isolated from patients with Typhoid fever in Luanda, Angola...
February 9, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29432657/clinical-profile-antibiotic-susceptibility-pattern-of-bacterial-isolates-and-factors-associated-with-complications-in-culture-proven-typhoid-patients-admitted-to-an-urban-hospital-in-bangladesh
#4
Halima Khatun, Shoeb Bin Islam, Nurun Nahar Naila, Syed Aminul Islam, Baitun Nahar, Md Nur Haque Alam, Tahmeed Ahmed
OBJECTIVES: Typhoid fever is one of the major causes of morbidity and mortality in typhoid endemic countries like Bangladesh. However, data on the clinical and microbiological profile as well as factors associated with complications of typhoid in Bangladesh are scarce. We intended to characterize the clinical and microbiological profile of culture-proven typhoid fever and to identify factors associated with complications. METHODOLOGY: Retrospective analysis of clinical data from 431 patients with culture-confirmed typhoid fever admitted to Dhaka hospital of International Centre for Diarrhoeal Disease Research, Bangladesh, between January 2010 and December 2014...
February 12, 2018: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29394238/plasmodium-salmonella-co-infection-induces-intense-inflammatory-responsanirban-pal-phd-cisr-central-institute-of-medicinal-and-aromatic-plants-lucknow-uttar-pradesh-indiae-oxidative-stress-and-liver-damage-a-mice-model-study-for-therapeutic-strategy
#5
Dinesh Kumar Patel, Sandeep Mittal, Nimisha Tiwari, Anil Kumar Maurya, Dhirendra Singh, Alok Kumar Pandey, Anirban Pal
Impairment of host immune response in malaria favours bacteraemia caused by typhoidal or non-typhoidal serovars of Salmonella enterica. Ofloxacin and Artesunate are the drugs that are clinically proven for treating typhoid and malaria respectively. The study evaluates the host responses upon treatment with antibiotic (Ofloxacin) and anti-malarial (Artesunate) in a standardized mice model harbouring co-infection. BALB/c mice (18-22 gm) were simultaneously co-infected with Plasmodium yoelii nigeriensis (Pyn) and Salmonella enterica Serovar Typhimurium (STm) and then treated with Ofloxacin or/and Artesunate from day 4 to day 7...
February 1, 2018: Shock
https://www.readbyqxmd.com/read/29365208/salmonella-isolated-from-chicken-carcasses-from-a-slaughterhouse-in-the-state-of-mato-grosso-brazil-antibiotic-resistance-profile-serotyping-and-characterization-by-repetitive-sequence-based-pcr-system
#6
Adelino da Cunha-Neto, Larrayane Albuês Carvalho, Ricardo César Tavares Carvalho, Dália Dos Prazeres Rodrigues, Sergio Borges Mano, Eduardo Eustáquio de Souza Figueiredo, Carlos Adam Conte-Junior
Salmonella is one of the major causative agents of foodborne infections. Salmonellosis becomes more dangerous when strains resistant to several antibiotics are found in food, especially in chicken, one of the primary transmission vehicles of this pathogen for humans. The present study aimed to estimate the occurrence of Salmonella in chicken carcasses from the state of Mato Grosso, Brazil, as well as determine the antibiotic resistance profile and genotypic characteristic of multi-drug resistant (MDR) isolates...
January 20, 2018: Poultry Science
https://www.readbyqxmd.com/read/29351771/characterization-of-salmonella-enterica-from-invasive-bloodstream-infections-and-water-sources-in-rural-ghana
#7
Denise Dekker, Ralf Krumkamp, Daniel Eibach, Nimako Sarpong, Kennedy Gyau Boahen, Michael Frimpong, Elina Fechtner, Sven Poppert, Ralf Matthias Hagen, Norbert Georg Schwarz, Yaw Adu-Sarkodie, Ellis Owusu-Dabo, Justin Im, Florian Marks, Hagen Frickmann, Jürgen May
BACKGROUND: Non-typhoidal Salmonella (NTS) cause the majority of bloodstream infections in Ghana, however the mode of transmission and source of invasive NTS in Africa are poorly understood. This study compares NTS from water sources and invasive bloodstream infections in rural Ghana. METHODS: Blood from hospitalised, febrile children and samples from drinking water sources were analysed for Salmonella spp. Strains were serotyped to trace possible epidemiological links between human and water-derived isolates...
January 19, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29327530/splenic-abscess-caused-by-salmonella-typhi-and-co-infection-with-leptospira
#8
Monalisa Sahu, Arvind Kumar, Neeraj Nischal, B G Bharath, Smita Manchanda, Naveet Wig
Splenic abscesses caused by Salmonella typhi are a very rare complication of typhoid fever in this era of use of specific antibiotics. Co-infection with Leptospira in such a patient is even rarer. Clinical diagnosis of splenic abscess caused by Salmonella is difficult owing to its rarity, being insidious in onset and having nonspecific clinical presentation. Splenic abscesses are potentially fatal complication of typhoid fever. In most of these patients, hemoglobinopathies or some other underlying immunocompromised state is usually present...
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29317704/biofilm-formation-protects-salmonella-from-the-antibiotic-ciprofloxacin-in-vitro-and-in-vivo-in-the-mouse-model-of-chronic-carriage
#9
Juan F González, Halley Alberts, Joel Lee, Lauren Doolittle, John S Gunn
Typhoid fever is caused by the human-restricted pathogen Salmonella enterica sv. Typhi. Approximately 5% of people that resolve the disease become chronic carriers, with the gallbladder as the main reservoir of the bacteria. Of these, about 90% present with gallstones, on which Salmonella form biofilms. Because S. Typhi is a human-restricted pathogen, these carriers are the main source of dissemination of the disease; unfortunately, antibiotic treatment has shown to be an ineffective therapy. This is believed to be caused by the inherent antibiotic resistance conferred by Salmonella biofilms growing on gallstones...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29201803/massive-lower-gastrointestinal-bleed-caused-by-typhoid-ulcer-conservative-management
#10
Apoorv Goel, Roli Bansal
Typhoid fever is caused by gram-negative organism Salmonella typhi. The usual presentation is high-grade fever, but complications like gastrointestinal (GI) hemorrhage and perforation are also seen frequently. With the advent of antibiotics, these complications are rarely seen now. We present a case of a young female who was admitted with a diagnosis of typhoid fever presented with a massive GI bleed from ulcers in the terminal ileum and was managed conservatively without endotherapy and surgery. How to cite this article: Goel A, Bansal R...
July 2017: Euroasian Journal of Hepato-Gastroenterology
https://www.readbyqxmd.com/read/29201148/whole-genome-sequencing-based-detection-of-antimicrobial-resistance-and-virulence-in-non-typhoidal-salmonella-enterica-isolated-from-wildlife
#11
Milton Thomas, Gavin John Fenske, Linto Antony, Sudeep Ghimire, Ronald Welsh, Akhilesh Ramachandran, Joy Scaria
The aim of this study was to generate a reference set of Salmonella enterica genomes isolated from wildlife from the United States and to determine the antimicrobial resistance and virulence gene profile of the isolates from the genome sequence data. We sequenced the whole genomes of 103 Salmonella isolates sampled between 1988 and 2003 from wildlife and exotic pet cases that were submitted to the Oklahoma Animal Disease Diagnostic Laboratory, Stillwater, Oklahoma. Among 103 isolates, 50.48% were from wild birds, 0...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29163400/prevalence-and-antibiotic-resistance-of-non-typhoidal-salmonella-isolated-from-raw-chicken-carcasses-of-commercial-broilers-and-spent-hens-in-tai-an-china
#12
Song Li, Yufa Zhou, Zengmin Miao
The present study was aimed to determine the prevalence and characteristics of Salmonella isolated from meat samples of commercial broilers (CB) and spent hens (SH). Between March and June 2016, 200 retail raw chicken carcasses (100 from CB and 100 from SH) were obtained from local supermarkets in Tai'an city of China, and Salmonella isolates were then analyzed for antibiotic resistance, serotype, β-lactamase genes, and the presence of class 1 integron. Forty Salmonella strains were obtained in this study (CB: 21/100, 21%; SH: 19/100, 19%)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29153150/enhancing-the-role-of-vaccines-in-combatting-antimicrobial-resistance
#13
Charles Clift, David M Salisbury
Interest in addressing antimicrobial resistance (AMR) has grown recently but little effort has been made to consider how existing and new vaccines could impact on AMR. A 2017 Chatham House meeting considered the role of vaccines and how to demonstrate their value through their impact on AMR. Ways existing vaccines have reduced antibiotic prescribing and the prevalence of some resistant organisms were reviewed. Other new vaccines could have a similar impact. In gonorrhoea, where complete resistance has developed, vaccine may be the best option...
December 4, 2017: Vaccine
https://www.readbyqxmd.com/read/29149266/association-between-prior-antibiotic-therapy-and-subsequent-risk-of-community-acquired-infections-a-systematic-review
#14
Umer Malik, David Armstrong, Mark Ashworth, Alex Dregan, Veline L'Esperance, Lucy McDonnell, Mariam Molokhia, Patrick White
Background: Antibiotic use can have negative unintended consequences including disruption of the human microbiota, which is thought to protect against pathogen overgrowth. We conducted a systematic review to assess whether there is an association between exposure to antibiotics and subsequent risk of community-acquired infections. Methods: We searched MEDLINE, EMBASE and Web of Science for studies published before 30 June 2017, examining the association between antibiotic use and subsequent community-acquired infection...
February 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29141347/-antimicrobial-resistance-and-molecular-subtypes-of-salmonella-typhi-and-salmonella-paratyphoid-isolates-from-jiangsu-province-2012-2015
#15
X X Kong, C Dong, H Ji, Y Wang, C C Bao, X Huo, H M Qian
Objective: To retrospectively analyze the antimicrobial resistance phenotype and molecular typing characteristics of Salmonella (S.) typhi and S. paratyphi in Jiangsu province from 2012 to 2015. Methods: The samples were collected from typhoid and paratyphoid patients in Jiangsu province. The biochemical identification and serotyping were carried out after isolation and culture. Kirby-Bauer (K-B) testing was used to detect the drug susceptibility of the strains. The molecular typing characteristics of S. typhi and S...
November 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29137627/prevalence-of-current-patterns-and-predictive-trends-of-multidrug-resistant-salmonella-typhi-in-sudan
#16
Ayman A Elshayeb, Abdelazim A Ahmed, Marmar A El Siddig, Adil A El Hussien
BACKGROUND: Enteric fever has persistence of great impact in Sudanese public health especially during rainy season when the causative agent Salmonella enterica serovar Typhi possesses pan endemic patterns in most regions of Sudan - Khartoum. OBJECTIVES: The present study aims to assess the recent state of antibiotics susceptibility of Salmonella Typhi with special concern to multidrug resistance strains and predict the emergence of new resistant patterns and outbreaks...
November 14, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/29112671/travel-characteristics-and-pretravel-health-care-among-pregnant-or-breastfeeding-u-s-women-preparing-for-international-travel
#17
Stefan H F Hagmann, Sowmya R Rao, Regina C LaRocque, Stefanie Erskine, Emily S Jentes, Allison T Walker, Elizabeth D Barnett, Lin H Chen, Davidson H Hamer, Edward T Ryan
OBJECTIVE: To study characteristics and preventive interventions of adult pregnant and breastfeeding travelers seeking pretravel health care in the United States. METHODS: This cross-sectional study analyzed data (2009-2014) of pregnant and breastfeeding travelers seen at U.S. travel clinics participating in Global TravEpiNet. Nonpregnant, nonbreastfeeding adult female travelers of childbearing age were used for comparison. We evaluated the prescription of malaria chemoprophylaxis and antibiotics for this population as well as the administration of three travel-related vaccines: hepatitis A, typhoid, and yellow fever...
November 3, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29089020/transcriptomic-study-of-salmonella-enterica-subspecies-enterica-serovar-typhi-biofilm
#18
Khee Chian Jason Chin, Todd Duane Taylor, Maxime Hebrard, Kogaan Anbalagan, Marjan Ganjali Dashti, Kia Kien Phua
BACKGROUND: Typhoid fever is an acute systemic infection of humans caused by Salmonella enterica subspecies enterica serovar Typhi (S. Typhi). In chronic carriers, the bacteria survive the harsh environment of the gallbladder by producing biofilm. The phenotype of S. Typhi biofilm cells is significantly different from the free-swimming planktonic cells, and studies have shown that they are associated with antibiotic resistance, immune system evasion, and bacterial persistence. However, the mechanism of this transition and the events leading to biofilm formation are unknown...
October 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29051234/draft-genome-sequence-of-a-salmonella-enterica-serovar-typhi-strain-resistant-to-fourth-generation-cephalosporin-and-fluoroquinolone-antibiotics
#19
Danish Gul, Robert F Potter, Hurmat Riaz, Shifa Tariq Ashraf, Meghan A Wallace, Tehmina Munir, Amjad Ali, C A Burnham, Gautam Dantas, Saadia Andleeb
Typhoid is endemic in developing countries. We report here the first draft genome sequence of a Salmonella enterica serovar Typhi clinical isolate from Pakistan exhibiting resistance to cefepime (a fourth-generation cephalosporin) and fluoroquinolone antibiotics, two of the last-generation therapies against this pathogen. The genome is ~4.8 Mb, with two putative plasmids.
October 19, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29026632/salmonella-oranienburg-haemorrhagic-cystitis-in-an-immunocompetent-young-male
#20
Jiasian Teh, Mark Quinlan, Damien Bolton
Introduction. Non-typhoidal salmonella (NTS) bacteriuria is extremely rare. Haemorrhagic cystitis is defined by urinary symptoms including haematuria, frequency, urgency and dysuria. Reports of haemorrhagic cystitis caused by NTS are exceptionally uncommon, especially in immunocompetent, young, male patients. Case presentation. A 27-year-old male with no past medical history presented to the Emergency Department with a 24 h history of visible haematuria having returned five days earlier from a five month trip across South America...
August 2017: JMM Case Reports
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