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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Efficacy of combined influenza and 23-valent pneumococcal polysaccharide vaccines in chronic smokers

Li, Tsz-wai, 李梓維 January 2014 (has links)
Background Chronic smokers are at risk of premature death associated with underlying pulmonary or cardiovascular diseases. Dual influenza and pneumococcal vaccination has been shown to prevent death and hospitalization secondary to pulmonary or cardiovascular diseases in elderly persons. Its effect in chronic smokers remained unknown. Methods This is a prospective randomized open-labeled trial conducted from April 2010 to March 2013, comprising adult patients aged less than 50 years who were chronic smokers. Subjects were randomly assigned into 4 groups. Group 1 (study group) patients received both trivalent influenza vaccine (TIV) and the 23-valent polysaccharide pneumococcal vaccine (PPV). There were 3 control groups: Group 2 patients received the TIV only. Group 3 patients received the PPV only and Group 4 patients did not receive any vaccines. The TIV used was the Vaxigrip® (Sanofi Pasteur, France) and the PPV used was the Pneumovax®23 (Merck, USA). All enrolled patients were follow-up for 24 months post vaccination. Patient details, Charlson comorbidity index, medications, subsequent hospitalization, diagnosis and mortality were recorded and analyzed. Results A total of 1006 subjects were enrolled and completed the study (Group PPV+TIV: 250; Group TIV: 254, Group PPV: 250 and Group None: 259). The baseline demographics and Charlson comorbidity index were similar among subjects in the 4 groups. The median age was 48 years and 85.9% were male patients. Significantly fewer subjects who received the dual vaccination (Group PPV+TIV) were hospitalized (p<0.001), with shorter mean length of stay (p<0.001), and less frequent hospitalization (p<0.001) for cardiovascular or respiratory diseases than no vaccination (Group None) or single vaccination (Group TIV and Group PPV). Multivariate analysis demonstrated that dual vaccination with PPV + TIV was the only independent factor associated with reduced risk of hospitalization (p<0.001; relative risk 0.288; 95% CI 0.101-0.154). There was no difference in mortality rate among the groups. Both vaccinations were well tolerated and no serious adverse events were reported. Conclusion Dual influenza and pneumococcal vaccinations prevented chronic smokers against hospitalization secondary to pulmonary or cardiovascular causes. Annual influenza and a single pneumococcal vaccination should be promoted among chronic smokers. / published_or_final_version / Microbiology / Master / Master of Medical Sciences
42

Studies on virulence proteins of Streptococcus Pneumoniae / a thesis submitted by Robert Arthur Lock

Lock, Robert Arthur January 1989 (has links)
Bibliography: leaves [177]-[194] / [194] leaves : ill ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Paediatrics, 1989
43

Effectiveness of influenza and pneumococcal vaccination against hospitalisation for community-acquired pneumonia among persons >=65 years

Skull, Susan January 2007 (has links) (PDF)
Although there are well-documented benefits from influenza vaccine and 23-valent pneumococcal polysaccharide vaccine (23vPPV) against invasive pneumococcal disease and laboratory confirmed influenza, their effectiveness against pneumonia remains controversial for community-based persons aged >=65years. At the time of this research, within Australia, only the government of Victoria publicly funded these vaccines for elderly persons. With continued growth of the elderly population, the subsequent adoption of an Australia-wide program, and increasing uptake of similar programs in other countries, there is a need for data clarifying the impact of vaccination on pneumonia. This research estimates incremental vaccine effectiveness of 23vPPV over and above influenza vaccine against hospitalisation with community-acquired pneumonia (CAP) in the elderly.
44

Hospitalizations associated with pneumococcal infection within the Medicare population among vaccinated and non-vaccinated patients

Webb, Silky Fanyelle. January 2007 (has links)
Thesis (M.S.)--University of South Florida, 2007. / Title from PDF of title page. Document formatted into pages; contains 36 pages. Includes bibliographical references.
45

Impacto da vacina pneumocócica conjugada 10-valente (PCV10) na meningite pneumocócica na região metropolitana de Salvador, Bahia

Silva Junior, Jailton de Azevedo January 2015 (has links)
Submitted by Ana Maria Fiscina Sampaio (fiscina@bahia.fiocruz.br) on 2016-05-11T14:07:03Z No. of bitstreams: 1 Jailton_Azevedo Silva Junior. Impacto da vacina...2015.pdf: 2256825 bytes, checksum: 6da623ba97a2d68604f3b4a098585b07 (MD5) / Approved for entry into archive by Ana Maria Fiscina Sampaio (fiscina@bahia.fiocruz.br) on 2016-05-11T14:07:15Z (GMT) No. of bitstreams: 1 Jailton_Azevedo Silva Junior. Impacto da vacina...2015.pdf: 2256825 bytes, checksum: 6da623ba97a2d68604f3b4a098585b07 (MD5) / Made available in DSpace on 2016-05-11T14:07:15Z (GMT). No. of bitstreams: 1 Jailton_Azevedo Silva Junior. Impacto da vacina...2015.pdf: 2256825 bytes, checksum: 6da623ba97a2d68604f3b4a098585b07 (MD5) Previous issue date: 2015 / Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / INTRODUÇÃO: Em 2010, a vacina conjugada 10-valente (PCV10) foi incorporada ao programa nacional de imunizações (PNI) brasileiro. Este imunobiológico confere imunização contra os dez principais tipos capsulares de Streptococcus pneumoniae, patógeno responsável por diversas manifestações clínicas e com elevada contribuição nas taxas de incidência e mortalidade por meningite, que é a condição clínica mais grave. OBJETIVO: O presente estudo teve como objetivo avaliar o impacto da PCV10 na epidemiologia da meningite pneumocócica na região metropolitana de Salvador (RMS) Bahia, comparando o período anterior (2008-2010) e posterior (2011-2013) a sua utilização, bem como realizar uma caracterização molecular minuciosa a partir de uma série histórica (1996-2012) entre os isolados resistentes a penicilina (PNSSP com CIM≥ 0,125 μg/mL) e para os sorotipos não-vacinais (2008-2012). MATERIAL E MÉTODOS: Foram incluídos todos casos de meningite pneumocócica confirmados laboratorialmente no período entre 1996 a 2013. Taxas de incidência para a Salvador e RMS foram calculadas com base nos dados populacionais do IBGE/2010. A determinação do tipo capsular foi realizada através da técnica de Multiplex-PCR e/ou reação de Quellung. A sensibilidade a nove antimicrobianos foi testada através das técnicas disco-difusão, microdiluição e E-test. Para caracterizar o perfil molecular foram aplicadas as técnicas de genotipagem de PFGE e MLST. RESULTADOS: Um total de 939 casos de meningite pneumocócica foram identificados no período de 1996- 2013, sendo que 70 casos ocorrem entre 2011 a 2013 (período pós-vacinal). A incidência de meningite pneumocócica em todas as faixas etárias na RMS reduziu de 0,70 casos/100.000 habitantes para 0,59 casos/100.000 habitantes considerando o período de três anos antes e após a vacinação com PCV10 [p< 0,05; RR IC 95%: 1,46 (1,03-2,05)]. Esta redução foi significativa na faixa etária de 0-2 anos e nos casos por sorotipos relacionados à PCV10. Não houve aumento significativo de casos por sorotipos não vacinais nesta casuística, apesar do surgimento de casos por sorotipos não-vacinais não detectados anteriormente na série histórica de MP (10F, 21, 22F, 15A e 24F). Os isolados resistentes à penicilina analisados na série histórica se restringiram a 13 sorotipos, entre os quais: 14 (45,1 %; 78/173), 23F (19,1%; 33/173), 6B (14,4 %; 25/173), 19F (9,2 %; 16/173) e 19A (5,2 %; 9/173). 94% dos casos nãosusceptíveis à penicilina (PNSSP) foram de sorotipos vacinais. Os grupos clonais caracterizados pelo PFGE/MLST predominantes ao longo dos anos foram representados pelo sorotipo 14, denominado grupo A/ST 66 [35,3 % (61/173)] e grupo GK/ST 156 [4.6 % (8/173)], este último associado com níveis elevados de resistência a penicilina e ceftriaxona. Não foram detectados grupos clonais emergentes associados a tipos capsulares não-vacinais. CONCLUSÕES: Estes achados sugerem que a introdução da PCV10 modificou a epidemiologia da meningite pneumocócica na população estudada. / INTRODUCTION: In 2010, the 10-valent pneumococcal conjugate vaccine (PCV10) was introduced into the Brazilian national immunization program (NIP). This immunobiological provides immunization against the main ten capsular types of Streptococcus pneumoniae, the pathogen responsible for different clinical manifestations and high contribution in the incidence and mortality from meningitis, which is the most severe clinical condition. OBJECTIVE: This study aimed to evaluate the impact of PCV10 in the epidemiology of pneumococcal meningitis in the metropolitan area of Salvador (RMS) Bahia, comparing the previous (2008-2010) and after (2011-2013) periods its use, as well as conduct a thorough molecular characterization from a historical series (1996-2012) among isolates resistant to penicillin (PNSSP with CIM≥ 0.125 g / ml) and nonvaccine serotypes (2008-2012). MATERIAL AND METHODS: We included all cases of pneumococcal meningitis laboratory confirmed for the period 1996 to 2013. Incidence rates for Salvador and RMS were calculated based on population data from IBGE/2010. The capsular type determination was performed by multiplex PCR and/or Quellung reaction. Isolates Nine antibiotics were tested by disk-diffusion test, broth micro-dilution and E-test. To characterize the molecular profiling techniques were applied genotyping PFGE and MLST. RESULTS: A total of 939 cases of pneumococcal meningitis were identified during 1996-2013 period, with 70 cases occurring between 2011-2013 (post-vaccination period). The incidence of pneumococcal meningitis in all age groups in the RMS decreased from 0.70 cases / 100,000 inhabitants to 0.59 cases / 100,000 inhabitants considering the three-year period before and after vaccination with PCV10 [p <0.05; RR 95% CI: 1.46 (1.03 to 2.05)]. This reduction was significant in the age group 0-2 years and in cases by serotypes related to PCV10. There was no significant increase in cases by serotypes not vaccine in this series, despite the emergence of cases by serotypes not-vaccine previously undetected in the historical series of MP (10F, 21, 22F, 15A and 24F). The penicillin resistant isolates analyzed the historical series were restricted to 13 serotypes, including: 14 (45.1%; 78/173), 23F (19.1%; 33/173), 6B (14.4%; 25/173), 19F (9.2%, 16/173) and 19A (5.2%, 9/173). 94% of nonsusceptible to penicillin cases (PNSSP) were vaccine serotypes. Clonal groups characterized by PFGE / MLST predominant over the years have been represented by serotype 14, group called A / ST 66 [35.3% (61/173)] and Group GK / TS 156 [4.6% (8/173) ], the latter associated with elevated levels of penicillin and ceftriaxone resistance. Not were detected emerging clonal groups associated with capsular types non-vaccination. CONCLUSIONS: These findings suggest that the introduction of PCV10 changed the epidemiology of pneumococcal meningitis in the population studied.
46

Immunodulation of inflammation in a murine pnemococcal sepsis model

Musie, Mbulaheni Edgar 01 October 2013 (has links)
Department of Microbiology / PhD (Microbiology)
47

Beeinflussung des Verlaufs von Pneumokokken-Meningitis in Mäusen durch Stimulation mit einem Cytosin-Guanin-haltigen Oligonukleotid / The Impact of stimulation with an oligonucleotide containing cytosin and guanin on the course of pneumococcal meningitis in mice

Zacke, Laura 11 February 2020 (has links)
No description available.
48

Evidence-Based Practice for Influenza and Pneumococcal Nurse-Driven Protocol

Tunc, Melissa 01 January 2018 (has links)
At the project site in New Jersey, eligible patients were leaving the hospital without receiving the influenza or pneumococcal vaccine. The field site has an established, evidence-based, nurse-driven protocol. The purpose of this project was to increase adherence to the current influenza and pneumococcal nurse-driven protocol on one medical-surgical unit. This unit had experienced low adherence rates to the nurse-driven protocol for vaccines, not reaching the New Jersey state target of 96% administration prior to discharge. The practice-focused question was: Will increasing awareness of evidence-based practice increase adherence to the influenza and pneumococcal vaccine protocol? A quality improvement plan was developed to address a gap in practice using the plan-do-study-act model. Internal vaccination data was the source of evidence used to drive this project. Baseline data was used from 2 months prior to the December 2017 start of the project. Once the quality improvement plan was implemented, data were collected and analyzed weekly with the quality improvement team. Findings for the pneumococcal vaccine demonstrated reaching 96% or higher while the influenza vaccine exceeded the state target reaching 100% of discharged patients being vaccinated. Implementing large surveillance boards into clinical rounds promoted increased adherence to the protocol, achieving a positive social change. Leadership worked directly with the staff to use evidence-based practice and promote nursing autonomy to administer the vaccines. An increased number of vaccinated patients leaving the medical-surgical unit was achieved.
49

The Immune Response to Streptococcus pneumoniae and Pneumococcal Polysaccharides

Rabquer, Brqadley James 08 September 2006 (has links)
No description available.
50

Analysis of the Human Variable Gene Repertoire in Response to Pneumococcal Polysaccharides

Shriner, Anne K. January 2006 (has links)
No description available.

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