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https://www.readbyqxmd.com/read/28529020/nosocomial-legionellosis-and-invasive-aspergillosis-in-a-child-with-t-lymphoblastic-leukemia
#1
Rhoikos Furtwängler, Uwe Schlotthauer, Barbara Gärtner, Norbert Graf, Arne Simon
Invasive aspergillosis of the lungs and the central nervous system and Legionella pneumophilia serotype 1 infection of the lungs were diagnosed in a 22-month old child during inpatient induction treatment for T-lymphoblastic leukemia. Environmental investigations i.e. samples from the hospital water system did not reveal any Legionella. The patient may have been exposed to waterborne pathogens despite terminal water filtration due to a technical device to release residual tap water from the hose after showering...
May 13, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28497871/vital-signs-deficiencies-in-environmental-control-identified-in-outbreaks-of-legionnaires-disease-north-america-2000-2014
#2
EDITORIAL
L E Garrison, J M Kunz, L A Cooley, M R Moore, C Lucas, S Schrag, J Sarisky, C G Whitney
BACKGROUND: The number of reported cases of Legionnaires' disease, a severe pneumonia caused by the bacterium Legionella, is increasing in the United States. During 2000-2014, the rate of reported legionellosis cases increased from 0.42 to 1.62 per 100 000 persons; 4% of reported cases were outbreak-associated. Legionella is transmitted through aerosolization of contaminated water. A new industry standard for prevention of Legionella growth and transmission in water systems in buildings was published in 2015...
October 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/28494478/survival-of-legionella-in-earthquake-induced-soil-disturbance-liquefaction-in-residential-areas-christchurch-new-zealand-implications-for-disease
#3
Frances F Graham, David Jg Harte
AIM: To investigate a possible link between liquefaction dust exposure and the noticeable increase in legionellosis cases in response to major earthquakes in 2010 and 2011 that resulted in widespread soil disturbance (liquefaction) in parts of Christchurch, New Zealand. METHOD: We culture tested liquefaction-affected soil for Legionella spp. in the six months following the first earthquake in 2010. Thirty silt samples were collected randomly from locations within Christchurch's metropolitan area that were affected by liquefaction...
May 12, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28465870/is-legionellosis-present-and-important-in-colombia-an-analyses-of-cases-from-2009-to-2013
#4
Andrés Mauricio Patiño-Barbosa, Andrés Felipe Gil-Restrepo, Valentina Restrepo-Montoya, Wilmer E Villamil-Gomez, Jaime A Cardona-Ospina, Alfonso J Rodriguez-Morales
Infection due to Legionella pneumophila has been not studied in Colombia, although it is present. The observational, retrospective study in which the incidence of legionellosis in Colombia, 2009-2013, was estimated based on data extracted from the personal health records system (Registro Individual de Prestación de Servicios, RIPS) using the ICD-10 codes A48.1 (Legionnaires' disease) and A48.2 (Pontiac Fever). Using official population estimates of the National Administrative Department of Statistics (DANE), crude and adjusted incidence rates were estimated (cases / 100,000 pop)...
March 28, 2017: Curēus
https://www.readbyqxmd.com/read/28448459/viability-of-legionella-pneumophila-in-water-samples-a-comparison-of-propidium-monoazide-pma-treatment-on-membrane-filters-and-in-liquid
#5
Sara Bonetta, Cristina Pignata, Silvia Bonetta, Lorenza Meucci, Donatella Giacosa, Elena Marino, Giorgio Gilli, Elisabetta Carraro
Legionella pneumophila is a ubiquitous microorganism widely distributed in aquatic environments and can cause Legionellosis in humans. A promising approach to detect viable cells in water samples involves the use of quantitative polymerase chain reaction (qPCR) in combination with photoactivatable DNA intercalator propidium monoazide (PMA). However, the PMA efficiency could be different depending on the experimental conditions used. The aim of this study was to compare two PMA exposure protocols: (A) directly on the membrane filter or (B) in liquid after filter washing...
April 27, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28418314/population-genomics-of-legionella-longbeachae-and-hidden-complexities-of-infection-source-attribution
#6
Rodrigo Bacigalupe, Diane Lindsay, Giles Edwards, J Ross Fitzgerald
Legionella longbeachae is the primary cause of legionellosis in Australasia and Southeast Asia and an emerging pathogen in Europe and the United States; however, our understanding of the population diversity of L. longbeachae from patient and environmental sources is limited. We analyzed the genomes of 64 L. longbeachae isolates, of which 29 were from a cluster of legionellosis cases linked to commercial growing media in Scotland in 2013 and 35 were non-outbreak-associated isolates from Scotland and other countries...
May 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28353109/exploring-the-legionella-pneumophila-positivity-rate-in-hotel-water-samples-from-antalya-turkey
#7
Nevgün Sepin Özen, Şenay Tuğlu Ataman, Mestan Emek
The genus Legionella is a fastidious Gram-negative bacteria widely distributed in natural waters and man made water supply systems. Legionella pneumophila is the aetiological agent of approximately 90% of reported Legionellosis cases, and serogroup 1 is the most frequent cause of infections. Legionnaires' disease is often associated with travel and continues to be a public health concern at present. The correct water management quality practices and rapid methods for analyzing Legionella species in environmental water is a key point for the prevention of Legionnaires' disease outbreaks...
May 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28250292/discrimination-between-legionnaires-disease-and-pneumococcal-pneumonia-based-on-the-clinical-and-laboratory-features-a-quantitative-approach-using-the-modified-winthrop-university-hospital-weighted-point-system
#8
Hiroki Yamakuchi, Yohei Hamada, Tosiharu Urakami, Yosuke Aoki
Objective Legionnaires' disease (LD) is a common form of lobar pneumonia, but the optimum diagnostic modality has long been a subject of debate due to incomplete sensitivity and specificity. A delay in the initiation of specific therapy for LD is associated with increased mortality. The decision to treat a patient for Legionella must be made quickly. The purpose of this study was to evaluate the ability of the modified Winthrop-University Hospital WUH system to identify LD while discriminating against pneumococcal pneumonia at the time of hospitalization for community-acquired pneumonia...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28228245/legionellosis-acquired-through-a-dental-unit-a-case-study
#9
C Schönning, C Jernberg, D Klingenberg, S Andersson, A Pääjärvi, E Alm, E Tano, B Lytsy
In 2012, an elderly immunocompromised man died from legionellosis at a hospital in Uppsala, Sweden. The patient had visited a dental ward at the hospital during the incubation period. Legionella spp. at a concentration of 2000 colony-forming units/L were isolated from the cupfiller outlet providing water for oral rinsing. Isolates from the patient and the dental unit were Legionella pneumophila serogroup 1, subgroup Knoxville and ST9. Pulsed-field gel electrophoresis and whole-genome sequencing strongly suggested that the isolates were of common origin...
January 20, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28188095/prevalence-of-legionella-species-isolated-from-shower-water-in-public-bath-facilities-in-toyama-prefecture-japan
#10
Jun-Ichi Kanatani, Junko Isobe, Shiho Norimoto, Keiko Kimata, Chieko Mitsui, Junko Amemura-Maekawa, Fumiaki Kura, Tetsutaro Sata, Masanori Watahiki
AIMS: We investigated the prevalence of Legionella spp. isolated from shower water in public bath facilities in Toyama Prefecture, Japan. In addition, we analyzed the genetic diversity among Legionella pneumophila isolates from shower water as well as the genetic relationship between isolates from shower water and from stock strains previously analyzed from sputum specimens. METHODS: The isolates were characterized using serogrouping, 16S rRNA gene sequencing, and sequence-based typing...
February 8, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28166862/legionella-prevalence-and-risk-of-legionellosis-in-japanese-households
#11
T Kuroki, Y Watanabe, H Teranishi, S Izumiyama, J Amemura-Maekawa, F Kura
This study determined the occurrence of legionellae in private houses for which there were no available data on aquatic environments other than the water supply system. From June 2013 to November 2014, we collected 138 water and 90 swab samples from aquatic environments in 19 houses. Legionella DNA was detected via a loop-mediated isothermal amplification assay in 66 (47·8%) water and 17 (18·9%) swab samples. High Legionella DNA detection rates were observed in water samples from washing machines and aquariums...
May 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28159784/temperature-dependent-growth-modeling-of-environmental-and-clinical-legionella-pneumophila-multilocus-variable-number-tandem-repeat-analysis-mlva-genotypes
#12
Yehonatan Sharaby, Sarah Rodríguez-Martínez, Olga Oks, Marina Pecellin, Hila Mizrahi, Avi Peretz, Ingrid Brettar, Manfred G Höfle, Malka Halpern
Legionella pneumophila causes waterborne infections resulting in severe pneumonia. High-resolution genotyping of L. pneumophila isolates can be achieved by multiple-locus variable-number tandem-repeat analysis (MLVA). Recently, we found that different MLVA genotypes of L. pneumophila dominated different sites in a small drinking-water network, with a genotype-related temperature and abundance regime. The present study focuses on understanding the temperature-dependent growth kinetics of the genotypes that dominated the water network...
April 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28159177/microbiology-and-epidemiology-of-legionnaire-s-disease
#13
REVIEW
Almudena Burillo, María Luisa Pedro-Botet, Emilio Bouza
Legionnaire's disease (LD) is the pneumonic form of legionellosis caused by aerobic gram-negative bacilli of the genus Legionella. Individuals become infected when they inhale aerosolized water droplets contaminated with Legionella species. Forty years after the identification of Legionella pneumophila as the cause of the 1976 pneumonia outbreak in a hotel in Philadelphia, we have non-culture-based diagnostic tests, effective antibiotics, and preventive measures to handle LD. With a mortality rate still around 10%, underreporting, and sporadic outbreaks, there is still much work to be done...
March 2017: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/28141673/implementation-of-a-legionella-ordinance-for-multifamily-housing-garland-texas
#14
Ellen A Whitney, Sarah Blake, Ruth L Berkelman
CONTEXT: The incidence of legionellosis has sharply increased in the United States as a result of contaminated water systems. Jurisdictions across the country are considering whether to develop and implement regulations to protect individuals against Legionnaires' disease with its associated high morbidity and mortality. OBJECTIVE: This article sheds light on the implementation and effectiveness of a 2005 citywide Legionella testing mandate of multifamily housing cooling towers in Garland, Texas...
January 30, 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28123918/severe-legionella-pneumophila-infection-in-an-immunocompetent-patient-a-success-story-300-kilometers-away
#15
Miguel Jacob, Helena C Ramos, Bruno Morgado
The most significant outbreak of Legionella pneumophila, or Legionnaires' Disease, ever registered in Portugal occurred in 2014, and was considered one of the largest in European history. This relatively rare infection has a dire prognosis if not timely identified and correctly treated, presenting with a high lethality rate. We describe a case of infection by Legionella pneumophila in a previously healthy individual during an outbreak that originated 300 kilometers away from our hospital. The patient presented to the Emergency Department and after an initial assessment, was admitted to the Intensive Care Unit (ICU)...
December 21, 2016: Curēus
https://www.readbyqxmd.com/read/28098535/outbreak-of-legionnaire-s-disease-caused-by-legionella-pneumophila-serogroups-1-and-13
#16
Toshiro Kuroki, Junko Amemura-Maekawa, Hitomi Ohya, Ichiro Furukawa, Miyuki Suzuki, Tomoka Masaoka, Kastuhiro Aikawa, Kazumi Hibi, Masatomo Morita, Ken-Ichi Lee, Makoto Ohnishi, Fumiaki Kura
In Japan, hot springs and public baths are the major sources of legionellosis. In 2015, an outbreak of Legionnaires' disease occurred among 7 patients who had visited a spa house. Laboratory investigation indicated that L. pneumophila serogroup 1 and 13 strains caused the outbreak and that these strains were genetically related.
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28059171/comparison-of-sputum-microbiome-of-legionellosis-associated-patients-and-other-pneumonia-patients-indications-for-polybacterial-infections
#17
Hila Mizrahi, Avi Peretz, René Lesnik, Yana Aizenberg-Gershtein, Sara Rodríguez-Martínez, Yehonatan Sharaby, Nina Pastukh, Ingrid Brettar, Manfred G Höfle, Malka Halpern
Bacteria of the genus Legionella cause water-based infections resulting in severe pneumonia. Here we analyze and compare the bacterial microbiome of sputum samples from pneumonia patients in relation to the presence and abundance of the genus Legionella. The prevalence of Legionella species was determined by culture, PCR, and Next Generation Sequencing (NGS). Nine sputum samples out of the 133 analyzed were PCR-positive using Legionella genus-specific primers. Only one sample was positive by culture. Illumina MiSeq 16S rRNA gene sequencing analyses of Legionella-positive and Legionella-negative sputum samples, confirmed that indeed, Legionella was present in the PCR-positive sputum samples...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28029126/legionella-risk-management-and-control-in-potable-water-systems-argument-for-the-abolishment-of-routine-testing
#18
Harriet Whiley
Legionella is an opportunistic pathogen of public health significance. One of the main sources of Legionella is potable water systems. As a consequence of aging populations there is an increasing demographic considered at high risk for Legionellosis and, as such, a review of the guidelines is required. Worldwide, Legionella has been detected from many potable water sources, suggesting it is ubiquitous in this environment. Previous studies have identified the limitations of the current standard method for Legionella detection and the high possibility of it returning both false negative and false positive results...
December 24, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27959883/antibiotic-susceptibility-of-legionella-strains-isolated-from-public-water-sources-in-macau-and-guangzhou
#19
Lina Xiong, He Yan, Lei Shi, Ziyao Mo
The purpose of this study was to investigate the susceptibility of waterborne strains of Legionella to eight antimicrobials commonly used in legionellosis therapy. The minimum inhibitory concentrations (MICs) of 66 environmental Legionella strains, isolated from fountains and cooling towers of public facilities (hotels, schools, and shopping malls) in Macau and Guangzhou, were tested using the microdilution method in buffered yeast extract broth. The MIC50/MIC90 values for erythromycin, cefotaxime (CTX), doxycycline (DOC), minocycline (MIN), azithromycin, ciprofloxacin, levofloxacin (LEV), and moxifloxacin were 0...
December 2016: Journal of Water and Health
https://www.readbyqxmd.com/read/27915212/rapid-detection-and-evolutionary-analysis-of-legionella-pneumophila-serogroup-1-sequence-type-47
#20
M Mentasti, P Cassier, S David, C Ginevra, L Gomez-Valero, A Underwood, B Afshar, J Etienne, J Parkhill, V Chalker, C Buchrieser, T G Harrison, S Jarraud
OBJECTIVES: Legionella pneumophila serogroup 1 (Lp1) sequence type 47 is the leading cause of legionellosis in north-western Europe, but, surprisingly, it is rarely isolated from environmental samples. Comparative genomics was applied to develop a PCR assay and to better understand the evolution of this strain. METHODS: Comparative analysis of 36 genomes representative of the Lp species was used to identify specific PCR targets, which were then evaluated in silico on 545 sequenced genomes and in vitro on 436 Legionella strains, 106 respiratory samples, and three environmental samples from proven ST47 sources...
April 2017: Clinical Microbiology and Infection
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