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Please use this identifier to cite or link to this item: http://hdl.handle.net/10362/5792

Title: Massive shift in the pneumococcal nasopharyngeal flora after the 7-valent conjugate vaccine: epidemiological studies and testing pathogenic potential in animal models
Authors: Frazão, Nelson
Advisor: de Lencastre, Hermínia
Tomasz, Alexander
Issue Date: 2010
Publisher: Universidade Nova de Lisboa. Instituto de Tecnologia Química e Biológica
Abstract: Although it exists mostly as a commensal bacterium colonizing the human nasopharynx, particularly in children, the Gram-positive bacterium Streptococcus pneumoniae, is also a major human pathogen that can cause a wide range of diseases, which include otitis media, sinusitis, pneumonia, and such life-threatening afflictions as bloodstream infection and meningitis. Created to protect children against pneumococcal disease, the 7-valent pneumococcal conjugate vaccine (PCV7) showed high efficacy in preventing disease caused by the serotypes included in the vaccine, the so-called vaccine types (VTs). Since colonization is an essential first step to develop pneumococcal disease, it is of importance to investigate the effect of this vaccine on the degree of colonization, on changes in the composition of the nasopharyngeal flora and the virulence potential of the non vaccine type (NVT) strains.(...)
Description: Dissertation presented to obtain the PhD degree in Biology/Molecular Biology by Universidade Nova de Lisboa, Instituto de Tecnologia Química e Biológica
URI: http://hdl.handle.net/10362/5792
ISBN: 978-989-20-2163-8
Appears in Collections:ITQB: MG - PhD Theses

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