Prevalence and Antimicrobial Agent Susceptibility of Methicillin-resistant Staphylococcus aureus in Healthy Pediatric Outpatients in Las Vegas

Colonization and infection by community-associated resistant strains of Staphylococcus aureus are being reported in epidemic proportions. The purpose of this study was to determine the local prevalence of methicillin-resistant Staphylococcus aureus (MRSA) colonization in children and to characterize the MRSA isolates in the laboratory with regard to antimicrobial agent susceptibility patterns, and the presence of the mecA and the Panton-Valentine leukocidin (PVL) genes. Nasal swabs were collected at two pediatric clinics from a total of 505 children during health maintenance visits. A brief questionnaire was administered to collect demographic data and pertinent medical, family, and social history. Samples were cultured onto 2 selective media for S. aureus and MRSA. Potential MRSA isolates were further evaluated by real-time polymerase chain reaction (PCR), and for susceptibility to eight antibiotics by disk diffusion. Culture results showed that MRSA was present in 15 of the 505 specimens (3.0%). Six different antimicrobial susceptibility profiles were observed among the MRSA isolates. PCR amplification results showed that all 15 MRSA isolates were positive for the presence of the mecA gene, and 10 MRSA isolates contained the PVL gene. Understanding local prevalence rates and the role of colonization in infection are needed to develop effective interventions to reduce MRSA infections

Uso racional de medicamentos antineoplásicos e ações judiciais no Estado de São Paulo

OBJECTIVE: To assess the rationality of legal suits and administrative requests requiring anticancer drugs filed against and submitted to the São Paulo State Department of Health, in view of scientific evidence on efficacy and safety. METHODS: A descriptive cross-sectional study was carried out based on information on lawsuits filed by cancer patients requiring anticancer drugs were furnished by the Department of Health. These drugs are among those having the greatest financial impact on the Brazilian Health System in 2006 and 2007. The drugs were assessed according to clinical evidence on efficacy and safety, based on Micromedex® categorization, on systematic reviews and meta-analyses. Indications present in the legal documentation were compared to the indications approved by regulatory agencies. RESULTS: Bevacizumab, capecitabine, cetuximab, erlotinib, rituximab, imatinib, and temozolomide accounted for expenses over R$40 million to meet 1220 requests and lawsuits, at an average cost of R$ 33,500 per patient. Selected studies do not recommend all the indications for the prescribed drugs. Approximately 17% of requests and lawsuits did not provide evidence for the required indication, and these amounted to inappropriate expenses of, at least, R$6.8 million. CONCLUSIONS: The results reinforce the need for technical expertise in dealing with legal suits and for capacity-building of health professionals in approaching the scientific literature, in order to appropriately select drugs and to ensure the best therapeutic decision for each clinical condition, and thus guarantee access to safe and effective health technologies and, therefore, to enhance the quality of the Brazilian pharmaceutical services model in oncology.OBJETIVO: Evaluar la racionalidad de las acciones judiciales y pedidos administrativos recibidos por la Secretaria Estatal de Salud de Sao Paulo según evidencias científicas de eficacia y seguridad. MÉTODOS: Estudio descriptivo, transversal basado en informaciones de la Secretaria sobre los medicamentos antineoplásicos solicitados por vía judicial, con mayor impacto financiero para el Sistema Único de Salud en 2006 y 2007. Los fármacos fueron evaluados considerando las evidencias clínicas de eficacia y seguridad, con base en la clasificación de Micromedx®, metanálisis y revisiones sistemáticas. Las indicaciones fueron confrontadas con las aprobadas en agencias reguladoras. RESULTADOS: Los medicamentos bevacizumabe, capecitabina, cetuximabe, erlotinibe, rituximabe, imatinibe y temozolomida generaron gastos superiores a R$ 40 millones para atender 1.220 solicitudes, con costo promedio de R$33,5 mil por paciente. Los estudios seleccionados no recomiendan parte de las indicaciones de los medicamentos prescritos. Cerca de 17$ 6,8 millones. CONCLUSIONES: Los resultados refuerzan la necesidad de calificación técnica para tratar las demandas judiciales y exige capacitación de los profesionales en el manejo de la literatura científica, en la selección adecuada de los fármacos y en la escogencia de la mejor conducta terapéutica para cada condición clínica. De esta forma será posible garantizar el acceso a tecnologías eficaces y seguras, y así perfeccionar el modelo de asistencia farmacéutica en oncología.OBJETIVO: Avaliar a racionalidade das ações judiciais e pedidos administrativos recebidos pela Secretaria de Estado da Saúde de São Paulo segundo evidências científicas de eficácia e segurança. MÉTODOS: Estudo descritivo, transversal, baseado em informações da Secretaria de Saúde sobre os medicamentos antineoplásicos solicitados por via judicial, com maior impacto financeiro para o Sistema Único de Saúde em 2006 e 2007. Os fármacos foram avaliados quanto às evidências clínicas de eficácia e segurança, com base na classificação do Micromedex®, em metanálises e revisões sistemáticas. As indicações foram confrontadas com aquelas aprovadas em agências reguladoras. RESULTADOS: Os medicamentos bevacizumabe, capecitabina, cetuximabe, erlotinibe, rituximabe, imatinibe e temozolomida geraram gastos superiores a R$40 milhões para atender 1.220 solicitações, com custo médio de R$ 33,5 mil por paciente. Os estudos selecionados não recomendam parte das indicações dos medicamentos prescritos. Cerca de 17% dos pedidos não tinham evidência para a indicação mencionada no pleito, o que equivale a um gasto inadequado de, no mínimo, R$ 6,8 milhões. CONCLUSÕES: Os resultados reforçam a necessidade de qualificação técnica para tratar as demandas judiciais e exige capacitação dos profissionais no manejo da literatura científica, na seleção adequada dos fármacos e na escolha da melhor conduta terapêutica para cada condição clínica. Dessa forma será possível garantir o acesso a tecnologias eficazes e seguras, e assim aprimorar o modelo de assistência farmacêutica em oncologia

Vacancy Control in Acene Blends Links Exothermic Singlet Fission to Coherence

The fission of singlet excitons into triplet pairs in organic materials holds great technological promise, but the rational application of this phenomenon is hampered by a lack of understanding of its complex photophysics. Here, we use the controlled introduction of vacancies by means of spacer molecules in tetracene and pentacene thin films as a tuning parameter complementing experimental observables to identify the operating principles of different singlet fission pathways. Time-resolved spectroscopic measurements in combination with microscopic modelling enables us to demonstrate distinct scenarios, resulting from different singlet-to-triplet pair energy alignments. For pentacene, where fission is exothermic, coherent mixing between the photoexcited singlet and triplet-pair states is promoted by vibronic resonances, which drives the fission process with little sensitivity to the vacancy concentration. Such vibronic resonances do not occur for endothermic materials such as tetracene, for which we find fission to be fully incoherent; a process that is shown to slow down with increasing vacancy concentration

Introductory programming: a systematic literature review

As computing becomes a mainstream discipline embedded in the school curriculum and acts as an enabler for an increasing range of academic disciplines in higher education, the literature on introductory programming is growing. Although there have been several reviews that focus on specific aspects of introductory programming, there has been no broad overview of the literature exploring recent trends across the breadth of introductory programming. This paper is the report of an ITiCSE working group that conducted a systematic review in order to gain an overview of the introductory programming literature. Partitioning the literature into papers addressing the student, teaching, the curriculum, and assessment, we explore trends, highlight advances in knowledge over the past 15 years, and indicate possible directions for future research

The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourteenth from SDSS overall (making this, Data Release Fourteen or DR14). This release makes public data taken by SDSS-IV in its first two years of operation (July 2014-2016). Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey (eBOSS); the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data driven machine learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS website (www.sdss.org) has been updated for this release, and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020, and will be followed by SDSS-V.Comment: SDSS-IV collaboration alphabetical author data release paper. DR14 happened on 31st July 2017. 19 pages, 5 figures. Accepted by ApJS on 28th Nov 2017 (this is the "post-print" and "post-proofs" version; minor corrections only from v1, and most of errors found in proofs corrected