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pneumococcus+serotype+3+ infection

Celestine Aho, Audrey Michael, Mition Yoannes, Andrew Greenhill, Peter Jacoby, John Reeder, William Pomat, Gerard Saleu, Pioto Namuigi, Suparat Phuanukoonnon, Heidi Smith-Vaughan, Amanda J Leach, Peter Richmond, Deborah Lehmann
Streptococcus pneumoniae is a leading cause of pneumonia, the most common cause of childhood death. Papua New Guinean children experience high rates of nasopharyngeal pneumococcal colonization within weeks of birth, predisposing them to pneumococcal disease. In a trial to determine the safety and immunogenicity of early infant vaccination with 7-valent pneumococcal conjugate vaccine (7vPCV), we investigated the impact of early schedules on pneumococcal carriage. Infants were randomized at birth to receive 7vPCV in a 0-1-2-month (n = 101) or a 1-2-3-month (n = 105) schedule or no 7vPCV (n = 106)...
December 2016: Vaccine Reports
María E Toledo, Maria F Casanova, Nivaldo Linares-Pérez, Dagmar García-Rivera, Gilda Toraño Peraza, Indira Barcos Pina, Martha Montes de Oca, Laura M Rodriguez-Noda, Mayelín Mirabal, Beatriz Paredes, Dunia M Chávez Amaro, Darielys Santana Mederos, Yury Valdés-Balbín, Vicente Verez-Bencomo
BACKGROUND: A new vaccine candidate against pneumococcus is being developed in Cuba, and it is a priority of the national health system. There is limited information on nasopharyngeal colonization burden, though it is essential for monitoring the impact of the vaccine. The study aims to estimate the prevalence of nasopharyngeal colonization in children 2-18 months of age and identify circulating serotypes, antimicrobial resistance and its association with selected risk factors. METHODS: A cross-sectional study was conducted between October and December 2013 in Cienfuegos municipality...
January 2017: Pediatric Infectious Disease Journal
Marta Inês Cazentini Medeiros, Bento Vidal de Moura Negrini, Jorgete Maria E Silva, Samanta Cristine Grassi Almeida, Maria Luiza Leopoldo, Silva Guerra, Denise de Andrade
INTRODUCTION: Infections caused by Streptococcus pneumoniae (pneumococcus) still represent a challenge for health systems around the world. OBJECTIVE: The objective of this study was to assess microbiological and clinical aspects in hospitalized patients with invasive pneumococcus disease between 1998 and 2013. MATERIALS AND METHODS: This was a retrospective study that analyzed the results of pneumococcus identification, serotyping, and susceptibility testing found in the Adolfo Lutz Institute databank...
May 2016: Brazilian Journal of Infectious Diseases
Sara Tomczyk, Carmen S Arriola, Bernard Beall, Alvaro Benitez, Stephen R Benoit, LaShondra Berman, Joseph Bresee, Maria da Gloria Carvalho, Amanda Cohn, Kristen Cross, Maureen H Diaz, Louise K Francois Watkins, Ryan Gierke, Jose E Hagan, Aaron M Harris, Seema Jain, Lindsay Kim, Miwako Kobayashi, Stephen Lindstrom, Lesley McGee, Meredith McMorrow, Benjamin L Metcalf, Matthew R Moore, Iaci Moura, W Allan Nix, Edith Nyangoma, M Steven Oberste, Sonja J Olsen, Fabiana Pimenta, Christina Socias, Kathleen Thurman, Jessica Waller, Stephen H Waterman, Matthew Westercamp, Melinda Wharton, Cynthia G Whitney, Jonas M Winchell, Bernard Wolff, Curi Kim
BACKGROUND: From January 2014-July 2014, more than 46 000 unaccompanied children (UC) from Central America crossed the US-Mexico border. In June-July, UC aged 9-17 years in 4 shelters and 1 processing center in 4 states were hospitalized with acute respiratory illness. We conducted a multistate investigation to interrupt disease transmission. METHODS: Medical charts were abstracted for hospitalized UC. Nonhospitalized UC with influenza-like illness were interviewed, and nasopharyngeal and oropharyngeal swabs were collected to detect respiratory pathogens...
July 1, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
D S Vorobiev, I B Semenova, Yu V Volokh, E E Romanenko, A P Baturo, N A Mikhailova
AIM: Study protective activity of protein-containing antigens of pneumococcus, obtained from serotypes 6B, 10A, 14, 19F, 23F and 36R, against infection with heterologous strains of S. pneumoniae. MATERIALS AND METHODS: S. pneumoniae strains of serotypes 3, 6B, 10A, 14, 19F, 23F and 36R, obtained from the collection of pneumococcus strains of Mechnikov RIVS, were used in the study. Protein-containing antigens of S. pneumoniae were isolated by acetone precipitations of supernatant fraction of culture medium...
November 2015: Zhurnal Mikrobiologii, Epidemiologii, i Immunobiologii
Chiara Azzari, Martina Cortimiglia, Francesco Nieddu, Maria Moriondo, Giuseppe Indolfi, Romano Mattei, Massimo Zuliani, Beatrice Adriani, Roberto Degl'Innocenti, Guglielmo Consales, Donatella Aquilini, Giancarlo Bini, Massimo Edoardo Di Natale, Clementina Canessa, Silvia Ricci, Elisa de Vitis, Giusi Mangone, Angela Bechini, Paolo Bonanni, Angela Pasinato, Massimo Resti
The 7-valent pneumococcal conjugate vaccine (PCV7) produced a significant herd protection in unvaccinated adult population mostly because of pneumococcus carriage decrease in vaccinated children. It is not known if the 13-valent pneumococcal vaccine can give similar effect on adults. Aims of the work were to evaluate whether the 6 additional serotypes are present in nasopharynx of children and serotype distribution in invasive pneumococcal infections (IPD) in adults. Realtime-PCR was used to evaluate pneumococcal serotypes in adults with confirmed IPD and in nasopharyngeal swabs (NP) from 629 children not vaccinated or vaccinated with PCV7 and resident in the same geographical areas...
2016: Human Vaccines & Immunotherapeutics
Ellen Heinsbroek, Terence Tafatatha, Christina Chisambo, Amos Phiri, Oddie Mwiba, Bagrey Ngwira, Amelia C Crampin, Jonathan M Read, Neil French
The prevalence of Streptococcus pneumoniae (pneumococcus) carriage is higher in adults who are infected with human immunodeficiency virus (HIV) than in adults who are not. We hypothesized that infants exposed to HIV become carriers of nasopharyngeal pneumococcus earlier and more frequently than infants who are not exposed to HIV. We compared infant pneumococcal acquisition by maternal HIV status and household exposure in Karonga District, Malawi, in 2009-2011, before the introduction of pneumococcal conjugate vaccine...
January 1, 2016: American Journal of Epidemiology
O Ochoa-Gondar, E Figuerola-Massana, A Vila-Corcoles, C A Aguirre, C de Diego, E Satue, F Gomez, X Raga
OBJECTIVE: This study investigated incidence and serotype distribution of Streptococcus pneumoniae causing acute otitis media (AOM) in Catalonian children, evaluating vaccination effectiveness in the current era of extended valency pneumococcal conjugate vaccines (PCVs). METHODS: Population-based surveillance study that included all AOM cases with isolation of pneumococcus (from otic fluids/otorrea) identified among children ≤14 years in the region of Tarragona (Southern Catalonia, Spain) from 01/01/2007 to 31/12/2013...
December 2015: International Journal of Pediatric Otorhinolaryngology
J-H Xu, W-J Dai, B Chen, X-Y Fan
As infection with Streptococcus pneumoniae (mainly via the mucosal route) is a leading cause of acute otitis media, sinus and bacterial pneumonia, the mucosal immunity plays an important role in the prevention of pneumococcal diseases. Therefore, intranasal vaccination may be an effective immunization strategy, but requires appropriate mucosal vaccine delivery systems. In this work, chitosan was used as a mucosal delivery system to form chitosan-PsaA nanoparticles based on ionotropic gelation methods and used to immunize BALB/c mice intranasally...
March 2015: Scandinavian Journal of Immunology
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