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Vaccine conjugates

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https://www.readbyqxmd.com/read/28527687/cost-effectiveness-analysis-of-typhoid-conjugate-vaccines-in-five-endemic-low-and-middle-income-settings
#1
Marina Antillón, Joke Bilcke, A David Paltiel, Virginia E Pitzer
BACKGROUND: Typhoid fever remains endemic in low- and middle-income countries. Programmatic use of existing vaccines is limited, but upcoming typhoid conjugate vaccines (TCVs) could warrant wider use. We evaluated the cost-effectiveness of five TCV delivery strategies in three urban areas (Delhi and Kolkata, India and Nairobi, Kenya) and two rural settings (Lwak, Kenya and Dong Thap, Vietnam) with varying incidence. METHODS AND FINDINGS: We evaluated routine infant vaccination with and without catch-up campaigns among older individuals...
May 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28526059/severe-polyserositis-induced-by-the-13-valent-pneumococcal-conjugate-vaccine-a-case-report
#2
Pierre Tawfik, Elie Gertner, Charlene E McEvoy
BACKGROUND: The United States Advisory Committee on Immunization Practices recommends administration of the 13-valent pneumococcal conjugate vaccine in series with the 23-valent pneumococcal polysaccharide vaccine for prevention of pneumonia in the elderly. Reports of autoimmune or auto-inflammatory diseases as a result of pneumococcal vaccination, especially pneumococcal conjugate vaccine, are extremely rare. CASE PRESENTATION: We present a case of severe serositis in a 75-year-old Caucasian woman complicated by pericardial and pleural effusions in the setting of recent 13-valent pneumococcal conjugate vaccine vaccination and no other obvious etiology...
May 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28518025/rise-in-group-w-meningococcal-carriage-in-university-students-united-kingdom
#3
Neil J Oldfield, Caroline Cayrou, Mahab A K AlJannat, Ali A A Al-Rubaiawi, Luke R Green, Shehzan Dada, Oliver D Steels, Christopher Stirrup, Joe Wanford, Banan A Y Atwah, Christopher D Bayliss, David P J Turner
MenACWY conjugate vaccination was recently introduced in the United Kingdom for adolescents and young adults to reduce disease from infection by Neisseria meningitidis group W. We conducted a cross-sectional meningococcal carriage study in first-year UK university students. Despite 71% MenACWY vaccine coverage, carriage of group W increased substantially.
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28518018/penicillin-resistance-of-nonvaccine-type-pneumococcus-before-and-after-pcv13-introduction-united-states
#4
Cheryl P Andam, Colin J Worby, Ryan Gierke, Lesley McGee, Tamara Pilishvili, William P Hanage
Introduction of 13-valent pneumococcal conjugate vaccine in the United States was not associated with a significant change in prevalence of penicillin resistance in nonvaccine type serotypes because of the variable success of highly resistant serotypes. Differences in regional serotype distribution and serotype-specific resistance contributed to geographic heterogeneity of penicillin resistance.
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28516866/invasive-serotype-35b-pneumococci-including-an-expanding-serotype-switch-lineage-united-states-2015-2016
#5
Sopio Chochua, Benjamin J Metcalf, Zhongya Li, Hollis Walker, Theresa Tran, Lesley McGee, Bernard Beall
We used whole-genome sequencing to characterize 199 nonvaccine serotype 35B pneumococcal strains that caused invasive pneumococcal disease (IPD) in the United States during 2015-2016 and related these findings to previous serotype 35B IPD data obtained by Active Bacterial Core surveillance. Penicillin-nonsusceptible 35B IPD increased during post-pneumococcal 7-valent conjugate vaccine years (2001-2009) and increased further after implementation of pneumococcal 13-valent conjugate vaccine in 2010. This increase was caused primarily by the 35B/sequence type (ST) 558 lineage...
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28516842/serotype-distribution-antimicrobial-resistance-and-prevalence-of-pilus-islets-in-pneumococci-following-the-use-of-conjugate-vaccines
#6
Mitsuyo Kawaguchiya, Noriko Urushibara, Meiji Soe Aung, Masaaki Shinagawa, Satoshi Takahashi, Nobumichi Kobayashi
PURPOSE: In Japan, the 7-valent pneumococcal vaccine (PCV7) was introduced in 2010 and, in 2013, the PCV7 was replaced with the 13-valent pneumococcal vaccine (PCV13). This study was conducted to investigate serotypes, antimicrobial resistance and prevalence of pilus islets in pneumococcal isolates from inpatients in a Japanese tertiary hospital. METHODOLOGY: From April 2011 to February 2016, 151 isolates [95 (18 children, 77 adults) and 56 (19 children, 37 adults) in the PCV7 and PCV13 periods, respectively] were collected...
May 17, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28513561/the-effect-of-physicochemical-modification-on-the-function-of-antibodies-induced-by-anti-nicotine-vaccine-in-mice
#7
Jennifer M Thorn, Keshab Bhattacharya, Renata Crutcher, Justin Sperry, Colleen Isele, Barbara Kelly, Libbey Yates, James Zobel, Ningli Zhang, Heather L Davis, Michael J McCluskie
Smoking remains one of the major causes of morbidity and mortality worldwide. One approach to assisting smoking cessation is via anti-nicotine vaccines, composed of nicotine-like haptens conjugated to a carrier protein plus adjuvant(s). We have previously shown that the carrier, hapten, linker, hapten load, degree of conjugate aggregation, and presence of adducts can each influence the function (nicotine-binding capacity) of the antibody (Ab) induced. Herein, we extend those findings and show that tertiary structure is also critical to the induction of functional immune responses and that this can be influenced by conjugation conditions...
May 17, 2017: Vaccines
https://www.readbyqxmd.com/read/28510985/changing-diagnosis-coding-routines-may-confound-the-results-of-longitudinal-childhood-pneumonia-studies
#8
M Eriksson, A Nilsson, R Bennet
AIM: This Swedish study compared the discharge diagnosis codes used for children up to the age of five hospitalised for acute lower respiratory tract infections before and after the introduction of the pneumococcal conjugate vaccine in 2007. METHODS: The International Classification of Diseases - 10(th) revision codes were used. We compared the discharge diagnosis codes at the Astrid Lindgren Children's Hospital from 1 July 2005 to 30 June 2007 (n=1,127) and 1 July 2011 to 30 June 2013 (n=1,240) in relation to the diagnostic methods used...
May 16, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28510699/invasive-pneumococcal-disease-in-infants-aged-0-60-days-in-the-united-states-in-the-13-valent-pneumococcal-conjugate-vaccine-era
#9
Liset Olarte, William J Barson, John S Bradley, Tina Q Tan, Philana Ling Lin, José R Romero, Laurence B Givner, Jill A Hoffman, Kristina G Hultén, Edward O Mason, Sheldon L Kaplan
We identified 53 infants aged 0-60 days with invasive pneumococcal disease (IPD) at 8 children's hospitals in the United States (2005-2015). After the introduction of 13-valent pneumococcal conjugate vaccine (PCV13), IPD caused by PCV13 serotypes decreased ~30% providing some evidence of indirect protection. However, approximately 60% of IPD was still caused by PCV13 serotypes.
May 16, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28510418/conjugation-reaction-with-8-arm-peg-markedly-improves-the-immunogenicity-of-mycobacterium-tuberculosis-cfp10-tb10-4-fusion-protein
#10
Xiaowei Sun, Weili Yu, Quanhai Pang, Tao Hu
Mycobacterium tuberculosis (Mtb) is a serious fatal pathogen responsible for tuberculosis (TB). Effective vaccination is highly desired for immunoprotection against Mtb infection. CFP10 and TB10.4 are two important immunodominant Mtb-secreted protein antigens, which suffer from poor immunogenicity. Thus, an antigen delivery system and adjuvants are needed to improve the immunogenicity of the two proteins. CFP10 and TB10.4 are two Mtb-secreted immunodominant protein antigens. A CFP10-TB10.4 fusion protein (CT) was used as the antigen...
May 16, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28508419/case-control-study-shows-that-neonatal-pneumococcal-meningitis-cannot-be-distinguished-from-group-b-streptococcus-cases
#11
Alexandra Arfi, Robert Cohen, Emmanuelle Varon, Stéphane Béchet, Stéphane Bonacorsi, Corinne Levy
AIM: Streptococcus pneumoniae (S. pneumoniae) is sometimes implicated in neonatal bacterial meningitis. This study described the demographic, clinical and biological features of neonatal S. pneumoniae meningitis and compared pneumococcal and group B streptococcal (GBS) neonatal meningitis. METHODS: We conducted a case-control study that compared neonates, aged one to 28 days with S. pneumoniae meningitis or GBS meningitis. Each case with S. pneumoniae was randomly matched to four control patients with GBS by age group and study year...
May 16, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28505234/increased-risk-for-meningococcal-disease-among-men-who-have-sex-with-men-in-the-united-states-2012-2015
#12
Temitope A Folaranmi, Cecilia B Kretz, Hajime Kamiya, Jessica R MacNeil, Melissa J Whaley, Amy Blain, Mike Antwi, Marie Dorsinville, Massimo Pacilli, Shamika Smith, Rachel Civen, Van Ngo, Kathleen Winter, Kathleen Harriman, Xin Wang, Virginia B Bowen, Manisha Patel, Stacey Martin, Lara Misegades, Sarah A Meyer
Background: Several clusters of serogroup C meningococcal disease among men who have sex with men (MSM) have been reported in the United States in recent years. The epidemiology and risk of meningococcal disease among MSM is not well-described. Methods: All meningococcal disease cases among men aged 18-64 years reported to the National Notifiable Disease Surveillance System between January 2012 and June 2015 were reviewed. Characteristics of meningococcal disease cases among MSM and men not known to be MSM (non-MSM) were described...
May 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28503278/conjugate-and-23-valent-pneumococcal-polysaccharide-booster-vaccination-in-asplenic-patients-with-thalassemia-major-a-randomized-clinical-trial-study
#13
Mohammad Sadegh Rezai, Javad Ghaffari, Mohammadreza Mahdavi, Amir Bahari, Shahram Ala
BACKGROUND: Pneumococcal vaccine provides protection against invasive pneumococcal disease in population at risk. This study was conducted to compare the antibody response to 13-valent pneumococcal conjugate vaccine and 23-valent pneumococcal polysaccharide vaccine in patients with thalassemia major. METHODS: A randomized cross-over clinical trial was performed on 50 asplenic patients with thalassemia major who referred to thalassemia center at Bouali Sina Hospital, Sari, Iran from 2013 to 2014...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28501455/exploring-the-acceptability-of-the-available-pneumococcal-conjugate-vaccines-in-canadian-health-care-professionals-and-immunization-experts
#14
Melissa Berman, Eve Dubé, Caroline Quach
BACKGROUND: In children, the 13 and 10-valent pneumoccocal conjugate vaccines (PCV13/10) are currently approved for the prevention of invasive pneumococcal disease (IPD). Acceptability is a key consideration in the implementation of a vaccine program and it is recognized that health professional's attitudes and opinions towards vaccines are independent predictors of the success of an immunization program. We aimed to survey the beliefs and attitudes for the two available PCVs in health care professionals and immunization experts...
June 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28498857/cost-effectiveness-of-pneumococcal-vaccination-strategies-for-the-elderly-in-korea
#15
Jung Yeon Heo, Yu Bin Seo, Won Suk Choi, Jacob Lee, Ji Yun Noh, Hye Won Jeong, Woo Joo Kim, Min Ja Kim, Hee Young Lee, Joon Young Song
BACKGROUND: Although the 13-valent pneumococcal conjugate vaccine (PCV13) showed good efficacy against pneumococcal disease in the the CAPiTA trial, the 23-valent pneumococcal polysaccharide vaccination (PPSV23) program has been ongoing for older adults aged ≥ 65 years in Korea since May of 2013. This study aimed to evaluate the cost-effectiveness of the current vaccination strategy (a single-dose PPSV23 vaccination) compared to a single-dose PCV13 vaccination and sequential PCV13-PPSV23 vaccinations in the elderly population aged ≥ 65 years...
2017: PloS One
https://www.readbyqxmd.com/read/28498097/the-asplenic-patient-post-insult-immunocompetence-infection-and-vaccination
#16
Brandon Dionne, Walter Dehority, Meghan Brett, Thomas R Howdieshell
BACKGROUND: Splenic injury can occur through multiple mechanisms and may result in various degrees of residual immunocompetence. Functionally or anatomically asplenic patients are at higher risk for infection, particularly with encapsulated bacteria. Vaccination is recommended to prevent infection with these organisms; however, the recommendations are routinely updated, and vaccine selection and timing are complex. METHODS: Review of the pertinent English-language literature, including the recommendations of the U...
May 12, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28497715/health-maintenance-deficits-in-a-fully-insured-population-of-adolescents-with-chronic-medical-conditions
#17
Rebecca Sainato, Michelle Flores, Allison Malloy, Casey Geaney, Michael Rajnik, Martin Ottolini, Martin Weisse
The current national monitoring of routine wellness care and vaccine uptake does not provide data on health maintenance among pediatric populations with chronic medical conditions. In this case-control study that analyzes wellness visits and vaccine uptake among adolescents, ages 16 to 18 years, we identified 938 without (controls) and 74 with (cases) 1 of 12 specific chronic medical conditions. The PPSV23 (23-valent pneumococcal polysaccharide vaccine) is recommended by the Advisory Committee on Immunization Practices for these 12 conditions and served as a measure of uptake for medically indicated vaccines...
June 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28496946/alpha-alumina-nanoparticle-conjugation-to-cysteine-peptidase-a-and-b-an-efficient-method-for-autophagy-induction
#18
Fatemeh Beyzay, Ahmad Zavaran Hosseini, Sara Soudi
BACKGROUND: Autophagy as a cellular pathway facilitates several immune responses against infection. It also eliminates invading pathogens through transferring content between the cytosol and the lysosomal vesicles and contributes to the cross-presentation of exogenous antigens to T lymphocytes via MHC class I pathway. Autophagy induction is one of the main targets for new drugs and future vaccine formulations. Nanoparticles are one of the candidates for autophagy induction. Cysteine Peptidase A (CPA) and Cysteine Peptidase B (CPB) are two members of papain family (Clan CA, family C1) enzyme that have been considered as a virulence factor of Leishmania (L...
April 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28494193/long-term-trends-in-invasive-pneumococcal-disease-in-manitoba-canada
#19
Salaheddin M Mahmud, Hasantha Sinnock, Luiz C Mostaço-Guidolin, Gurpreet Pabla, Aleksandra K Wierzbowski, Songul Bozat-Emre
Invasive pneumococcal disease (IPD) remains a significant public health problem in Manitoba, Canada although publically-funded pneumococcal conjugate (PCV7 and PCV13) and polysaccharide (PPV23) vaccination programs exist. We analyzed routine surveillance and administrative health data to examine trends in IPD rates as these vaccines were introduced. Data on all individuals with a laboratory-confirmed diagnosis of IPD between 2001 and 2014 were obtained from the provincial Communicable Diseases Surveillance database and linked with Manitoba's provincial immunization registry and physician and hospital databases...
May 11, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28488145/anti-pneumococcal-vaccine-induced-cellular-immune-responses-in-post-traumatic-splenectomized-individuals
#20
Djursun Karasartova, Umut Gazi, Ozgur Tosun, Ayse S Gureser, Ibrahim T Sahiner, Mete Dolapci, Aysegul T Ozkan
PURPOSE: Splenectomy is associated with increased risk of overwhelming post-splenectomy infections despite proper anti-pneumococcal vaccination. As most studies concentrated on vaccination-induced humoral immunity, the cellular immune responses triggered in splenectomized patients are not yet well studied. The present study aims to investigate this area as it can contribute to the development of more effective vaccination strategies. METHODS: Five healthy and 14 splenectomized patients were vaccinated with pneumococcal conjugate polysaccharide vaccine (PCV) followed by pneumococcal polysaccharide vaccine according to the guidelines established by Advisory Committee on Immunization Practices...
May 2017: Journal of Clinical Immunology
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