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https://www.readbyqxmd.com/read/28525941/environmental-contamination-with-staphylococcus-aureus-at-a-large-midwestern-university-campus
#1
Dipendra Thapaliya, Mohammed Taha, Mark R Dalman, Jhalka Kadariya, Tara C Smith
BACKGROUND: Staphylococcus aureus can cause minor to severe life-threatening infections. The changing epidemiology of S. aureus is of public health concern due to the emergence of multi-drug resistant (MDR) strains. Environmental surfaces play a crucial role in the transmission of S. aureus. The objective of this study was to examine environmental contamination and molecular characteristics of S. aureus in health professional-associated (HPA) and non-health professional-associated (NHPA) buildings at a large university...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28509842/molecular-epidemiology-of-methicillin-resistant-and-methicillin-susceptible-staphylococcus-aureus-in-the-ovine-dairy-chain-and-in-farm-related-humans
#2
Guerrino Macori, Giuseppina Giacinti, Alberto Bellio, Silvia Gallina, Daniela Manila Bianchi, Daniele Sagrafoli, Nicla Marri, Gilberto Giangolini, Simonetta Amatiste, Lucia Decastelli
Staphylococcus aureus is a major cause of clinical infections in humans and its enterotoxins cause foodborne disease. In the present study, we tested a total of 51 isolates of S. aureus from small-ruminant dairy farms with artisan dairy facilities, all located in Latium, Italy. The farms have a known history of a high prevalence of methicillin-resistant S. aureus (MRSA). Most of the MRSA isolates (27 of 51) belonged to spa-type t127 (43.1%), followed by t2678 (3.9%), t044 (2%), t1166 (2%), and t1773 (2%). PFGE performed on mecA positive strains identified one cluster (≥ 80% of similarity), comprising 22 MRSA...
May 16, 2017: Toxins
https://www.readbyqxmd.com/read/28504494/staphylococcus-aureus-nasal-carriage-and-its-antibiotic-resistance-profiles-in-children-in-high-altitude-areas-of-southwestern-china
#3
Zongrong Gong, Min Shu, Qing Xia, Shan Tan, Wei Zhou, Yu Zhu, Chaomin Wan
BACKGROUND/AIM: To describe the epidemiological profile of nasal carriage of Staphylococcus aureus (S. aureus) strains, its antibiotic resistance and mecA and Panton Valentine leukocidin (PVL) genes presence, in school children residing in high altitude areas of Southwestern China. METHODS: The cross sectional study screened nasal swabs taken from students for S.aureus. PCR was performed to identify mecA and PVL genes. RESULTS: Of the total 314 children 5...
June 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28473827/prevalence-virulence-genes-antimicrobial-susceptibility-and-genetic-diversity-of-staphylococcus-aureus-from-retail-aquatic-products-in-china
#4
Dongli Rong, Qingping Wu, Mingfang Xu, Jumei Zhang, Shubo Yu
Staphylococcus aureus is an important food-borne opportunistic pathogen that frequently causes severe blood and tissue infections or even fatal illnesses. Although S. aureus has been extensively studied in livestock and poultry foods in China, limited information has been reported in aquatic products. Accordingly, in this study, we aimed to characterize S. aureus in aquatic products purchased from retail markets in China. In total, 320 aquatic food samples were collected from 32 provincial capitals in China...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28399994/prevalence-and-molecular-characterization-of-staphylococcus-aureus-in-commercially-available-meat-over-a-one-year-period-in-iowa-usa
#5
Dipendra Thapaliya, Brett M Forshey, Jhalka Kadariya, Megan K Quick, Sarah Farina, Ashley O' Brien, Rajeshwari Nair, Amos Nworie, Blake Hanson, Ashley Kates, Shylo Wardyn, Tara C Smith
Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of infectious disease morbidity and mortality. Previous studies have confirmed the presence of S. aureus, including MRSA, on raw meat products. We investigated the prevalence and molecular epidemiology of S. aureus and MRSA in commercially-distributed antibiotic-free and conventional raw meat products (n = 3290) purchased in 8 Iowa retail stores weekly for a period of one year. Isolates were characterized using spa typing, and PCR was used to detect the presence of the Panton-Valentine leukocidin (PVL) and mecA genes...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28399155/frequent-isolation-of-methicillin-resistant-staphylococcus-aureus-mrsa-st398-among-healthy-pigs-in-portugal
#6
Teresa Conceição, Hermínia de Lencastre, Marta Aires-de-Sousa
BACKGROUND: Although livestock-associated ST398 methicillin-resistant Staphylococcus aureus (MRSA) has been widely reported in different geographic regions, MRSA carriage studies among healthy pigs in Portugal are very limited. METHODS AND FINDINGS: In total, 101 swine nasal samples from two Portuguese farms were screened for MRSA. In addition five swine workers (including one veterinary and one engineer) and four household members were nasally screened. The isolates were characterized by spa typing, SCCmec typing and MLST...
2017: PloS One
https://www.readbyqxmd.com/read/28359610/methicillin-resistant-staphylococcus-aureus-nasal-carriage-between-healthy-students-of-medical-and-nonmedical-universities
#7
Soleiman Abroo, Nima Hosseini Jazani, Yaeghob Sharifi
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is a challenge for public health, and community-acquired (CA) infections seem to be increasing among people in different areas. METHODS: A total of 700 healthy student volunteers residing in dormitories of universities in Urmia, Iran, were enrolled in this study. After identification of the isolates, antibiotic susceptibility, presence of mecA and pvl genes, and staphylococcal cassette chromosome mec (SCCmec) typing were evaluated...
March 27, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28283923/characterization-of-staphylococcus-aureus-in-goose-feces-from-state-parks-in-northeast-ohio
#8
Dipendra Thapaliya, Mark Dalman, Jhalka Kadariya, Katie Little, Victoria Mansell, Mohammed Y Taha, Dylan Grenier, Tara C Smith
Staphylococcus aureus can colonize a range of species. Although numerous studies have isolated pathogenic bacteria from wild birds, very little is known regarding S. aureus and their potential to spread methicillin-resistant (MRSA) strains. The objective of this study was to determine the presence and molecular characteristics of S. aureus in geese fecal samples collected from ten state parks across Northeast Ohio (NEO). A total of 182 fecal samples from Canada geese (Branta canadensis) were collected in April 2015...
March 10, 2017: EcoHealth
https://www.readbyqxmd.com/read/28260753/molecular-characterization-of-methicillin-resistance-staphylococcus-aureus-mrsa-from-different-tertiary-care-hospitals-in-bangladesh
#9
S Roy, T K Barman, M A Hossain, S K Paul, N Haque, S Ahmed, S A Nasreen, M S Hossain, S R Sarkar, N Kubayashi, N Laskar
Infections caused by Staphylococcus aureus were treated by methicillin, but about 95% of S. aureus has been resistance to methicillin, both in the community and hospitals and are increasing day by day. MRSA produces altered penicillin binding protein, PBP2a, due to the expression of mecA gene. Some strains of both the MRSA and MSSA carry PVL gene. This cross sectional observational study was conducted to detect the molecular-characterization of methicillin resistant Staphylococcus aureus (MRSA) and carried out in the Department of Microbiology, Mymensingh Medical College from July 2014 to December 2015...
January 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28179118/genetic-diversity-of-methicillin-resistant-staphylococcus-aureus-strains-isolated-from-burn-patients-in-iran-st239-sccmec-iii-t037-emerges-as-the-major-clone
#10
Mehdi Goudarzi, Mahnaz Bahramian, Mahboobeh Satarzadeh Tabrizi, Edet E Udo, Agnes Marie Sá Figueiredo, Maryam Fazeli, Hossein Goudarzi
Methicillin-resistant Staphylococcus aureus (MRSA) as a major cause of infection in health care, hospital and community settings is a global health concern. The purpose of this study was to determine the antibiotic susceptibility pattern and distribution of circulating molecular types of MRSA in a burn hospital in Tehran, the capital of Iran. During a 10-month study period, 106 Staphylococcus aureus isolates were assessed. Isolates were subjected to susceptibility testing using the disk diffusion method and Polymerase Chain Reaction (PCR) for detection of mecA, fem and nuc genes...
April 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28146185/-community-acquired-staphylococcus-aureus-isolated-from-paraguayan-children-clinical-phenotypic-and-genotypic-characterization
#11
Rosa Guillén, Letizia Carpinelli, Fátima Rodríguez, Héctor Castro, Beatriz Quíñónez, Ana Campuzano, María Macchi, Juana Ortellado, Patricia Almada, Lorena Grau, Mónica Rodríguez, Gladys Velázquez, Carmen Espínola, Gloría Samudio, Gloria Gómez, Wilma Basualdo
INTRODUCTION: The prevalence of Staphylococcus aureus in the community has increased, being the pediatric population the most affected. This fact highlights the need for epidemiological surveillance. AIM: To characterize clinical, phenotypic and genotypic isolates of S. aureus children's samples with community-acquired infections, collected in hospitals of Asuncion and the Central Department, between November 2009 and December 2010. MATERIALS AND METHODS: Descriptive and transverse analysis with analytical component...
December 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28056833/molecular-epidemiology-of-panton-valentine-leukocidin-positive-community-acquired-methicillin-resistant-staphylococcus-aureus-isolates-in-pastoral-communities-of-rural-south-western-uganda
#12
Benon B Asiimwe, Rossella Baldan, Alberto Trovato, Daniela M Cirillo
BACKGROUND: The emergence of multidrug resistant Staphylococcus aureus strains, including methicillin resistant (MRSA), is a global concern. Treatment of bacterial infections in Uganda's health care settings is largely empirical, rarely accompanied by laboratory confirmation. Here we show the burden, characteristics of MRSA and epidemiology of Panton-Valentine Leukocidin (PVL) positive strains in asymptomatic carriers in pastoral households of south-west Uganda. METHODS: Nasal swabs from 253 participants were cultured following standard methodology...
January 5, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28030828/methicillin-resistant-staphylococcus-aureus-isolates-in-a-hospital-of-shanghai
#13
Xiaoguang Wang, Lin Ouyang, Lingfei Luo, Jiqian Liu, Chiping Song, Cuizhen Li, Hongjing Yan, Ping Wang
Methicillin-resistant Staphylococcus aureus (MRSA) strains are now common both in the health care setting and in the community. Active surveillance is critical for MRSA control and prevention. Specimens of patients (200 patients with 1119 specimens) as well as medical staff and hospital setting (1000 specimens) were randomly sampled in a level 2 hospital in Shanghai from September 2011 to August 2012. Isolation, cultivation and identification of S. aureus were performed. Totally, 67 S. aureus strains were isolated...
January 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/27934826/molecular-characterisation-of-panton-valentine-leucocidin-producing-methicillin-resistant-staphylococcus-aureus-clones-isolated-from-the-main-hospitals-in-taif-ksa
#14
E M Eed, M M Ghonaim, Y M Hussein, S S Al-Shehri, A S Khalifa
INTRODUCTION: Panton-Valentine leucocidin (PVL) is a bicomponent pore-forming cytolytic toxin encoded by the lukF-PV and lukS-PV genes. Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) may carry the pvl genes which may be related to increased disease severity. This study aimed to characterise the PVL-producing MRSA recovered from different Taif Hospitals, Saudi Arabia. METHODS: The study included 45 hospital-acquired-MRSA (HA-MRSA) and 26 CA-MRSA strains which were identified from 445 S...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27899074/antibiotic-resistance-and-clonal-diversity-of-invasive-staphylococcus-aureus-in-the-rural-ashanti-region-ghana
#15
Denise Dekker, Manuel Wolters, Eva Mertens, Kennedy Gyau Boahen, Ralf Krumkamp, Daniel Eibach, Norbert G Schwarz, Yaw Adu-Sarkodie, Holger Rohde, Martin Christner, Florian Marks, Nimako Sarpong, Jürgen May
BACKGROUND: Staphylococcus aureus is among the most common pathogens isolated from blood cultures in Ghana; yet the epidemiology of blood infections in rural settings is poorly described. This study aims to investigate antimicrobial susceptibility and clonal diversity of S. aureus causing bloodstream infections in two hospitals in the Ashanti Region, Ghana. METHODS: Blood cultures were performed for all febrile patients (≥37.5 °C) on hospital admission. Antibiotic susceptibility testing for S...
November 29, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27790966/epidemiology-and-microbiological-characterization-of-clinical-isolates-of-staphylococcus-aureus-in-a-single-healthcare-region-of-the-uk-2015
#16
C Horner, L Utsi, L Coole, M Denton
We investigated the epidemiology and characterization of isolates of Staphylococcus aureus within the Yorkshire and Humber (YH) region in the UK. In July 2015, each laboratory within YH (n = 14) was assigned two consecutive days during which all clinical isolates of S. aureus were collected. Isolates were tested for antibiotic susceptibilities and the presence of genes encoding methicillin resistance (mecA and mecC), Panton-Valentine leukocidin (PVL) (lukS-PV), and efflux-mediated chlorhexidine resistance (qacA); isolates were also characterized by spa-types...
January 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/27669285/prevalence-of-methicillin-resistant-staphylococcus-aureus-and-other-staphylococcus-species-in-raw-meat-samples-intended-for-human-consumption-in-benin-city-nigeria-implications-for-public-health
#17
Etinosa O Igbinosa, Abeni Beshiru, Lucy U Akporehe, Faith E Oviasogie, Owen O Igbinosa
The present study was designed to characterize methicillin-resistant staphylococci from raw meat. A total of 126 meat samples were obtained from open markets between February and April, 2015. Antimicrobial susceptibility testing was carried out using the disc diffusion method. Molecular profiling was conducted using 16S rRNA, mecA, nuc, and PVL gene signatures were detected by polymerase chain reaction assay. Fifty isolates of methicillin-resistant Staphylococcus spp. were detected in 26 (52%) pork, 14 (28%) beef and 10 (20%) chicken samples...
September 24, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27603123/prevalence-and-characterization-of-oxacillin-susceptible-meca-positive-clinical-isolates-of-staphylococcus-aureus-causing-bovine-mastitis-in-india
#18
Hiral Mistry, Paresh Sharma, Sudipta Mahato, R Saravanan, P Anand Kumar, Vasundhra Bhandari
Bovine mastitis caused by multidrug resistant Staphylococcus aureus is a huge problem reported worldwide, resulting in prolonged antibiotic treatment and death of livestock. The current study is focused on surveillance of antibiotic susceptibility along with genotypic and phenotypic characterization of the pathogenic S. aureus strains causing mastitis in India. One hundred and sixty seven milk samples were collected from mastitis-affected cows from different farms in India resulting in thirty nine isolated S...
2016: PloS One
https://www.readbyqxmd.com/read/27553495/molecular-epidemiology-of-staphylococcus-aureus-from-lambar%C3%A3-n%C3%A3-gabon
#19
K V Okuda, N Toepfner, A S Alabi, B Arnold, S Bélard, U Falke, L Menschner, S Monecke, A Ruppelt-Lorz, R Berner
While there is an abundance of data on the epidemiology and molecular typing of Staphylococcus aureus, especially those carrying Panton-Valentine leucocidin (PVL) genes or mecA from Western Europe, Northern America and Australia, comparably few studies target African strains. In this study, we characterised genes associated with virulence and resistance, as well the phylogenetic background of S. aureus from healthy carriers and outpatients in Gabon. In total, 103 isolates from 96 study participants were characterised...
December 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27526771/prevalence-of-nasal-colonisation-by-methicillin-sensitive-and-methicillin-resistant-staphylococcus-aureus-among-healthcare-workers-and-students-in-madagascar
#20
Benedikt Hogan, Raphael Rakotozandrindrainy, Hassan Al-Emran, Denise Dekker, Andreas Hahn, Anna Jaeger, Sven Poppert, Hagen Frickmann, Ralf Matthias Hagen, Volker Micheel, Sabine Crusius, Jean Noel Heriniaina, Jean Philibert Rakotondrainiarivelo, Tsiriniaina Razafindrabe, Jürgen May, Norbert Georg Schwarz
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) clones pose a significant threat to hospitalised patients because the bacteria can be transmitted by asymptomatic carriers within healthcare facilities. To date, nothing is known about the prevalence of S. aureus and MRSA among healthcare workers in Madagascar. The objective of our study was to examine the prevalence and clonal epidemiology of nasal S. aureus and MRSA among healthcare workers and non-medical University students in Antananarivo, Madagascar...
2016: BMC Infectious Diseases
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