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https://www.readbyqxmd.com/read/29330244/primary-care-physicians-struggle-with-current-adult-pneumococcal-vaccine-recommendations
#1
Laura P Hurley, Mandy A Allison, Tamara Pilishvili, Sean T O'Leary, Lori A Crane, Michaela Brtnikova, Brenda L Beaty, Megan C Lindley, Carolyn B Bridges, Allison Kempe
INTRODUCTION: In 2012, the Advisory Committee on Immunization Practices recommended 13-valent pneumococcal conjugate vaccine (PCV13) in series with 23-valent pneumococcal polysaccharide vaccine (PPSV23) for at-risk adults ≥19; in 2014, it expanded this recommendation to adults ≥65. Primary care physicians' practice, knowledge, attitudes, and beliefs regarding these recommendations are unknown. METHODS: Primary care physicians throughout the U.S. were surveyed by E-mail and post from December 2015 to January 2016...
January 2018: Journal of the American Board of Family Medicine: JABFM
https://www.readbyqxmd.com/read/29329556/cancer-immunotherapy-beyond-immune-checkpoint-inhibitors
#2
REVIEW
Julian A Marin-Acevedo, Aixa E Soyano, Bhagirathbhai Dholaria, Keith L Knutson, Yanyan Lou
Malignant cells have the capacity to rapidly grow exponentially and spread in part by suppressing, evading, and exploiting the host immune system. Immunotherapy is a form of oncologic treatment directed towards enhancing the host immune system against cancer. In recent years, manipulation of immune checkpoints or pathways has emerged as an important and effective form of immunotherapy. Agents that target cytotoxic T lymphocyte-associated molecule-4 (CTLA-4), programmed cell death receptor-1 (PD-1), and programmed cell death ligand-1 (PD-L1) are the most widely studied and recognized...
January 12, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29329169/differences-in-immunization-site-pain-in-toddlers-vaccinated-with-either-the-10-or-the-13-valent-pneumococcal-conjugate-vaccine
#3
Johannes Trück, Sarah Kelly, Sena Jawad, Matthew D Snape, Merryn Voysey, Andrew J Pollard
We investigated immediate immunization pain in 12-month-old children randomized to receive a booster dose of either the 10- (PCV-10) or the 13-valent (PCV-13) pneumococcal conjugate vaccine. Pain was assessed using validated pain assessment tools and crying time. PCV-13 recipients had significantly higher scores on the observer-rated modified behavioral pain scale than did those receiving PCV-10, but the differences were small.Clinical trial registration at Clinicaltrials.gov (NCT01443416).
January 10, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29325605/establishment-of-detection-antibodies-brrs-batch-4-for-in-vitro-potency-assay-of%C3%A2-hepatitis-a-vaccines-by-elisa
#4
S Morgeaux, A Koy, I Manniam, E Regourd, P Variot, A Costanzo
The European Pharmacopoeia (Ph. Eur.) standard ELISA method for determination of antigen content of hepatitis A vaccines (HAV) requires specific coating and detection Biological Reference Reagents (BRRs). The 3rd batch of detection antibodies BRRs was established in 2015 for use in conjunction with the Ph. Eur. general chapter 2.7.14 'Assay of hepatitis A vaccine'. Stocks of these BRRs were running low and therefore the European Directorate for the Quality of Medicines & HealthCare (EDQM) organised a collaborative study to qualify replacement batches...
2018: Pharmeuropa Bio & Scientific Notes
https://www.readbyqxmd.com/read/29325173/immunogenicity-and-safety-of-pneumococcal-vaccination-in-patients-with-systemic-sclerosis
#5
Roger Hesselstrand, Johanna Nagel, Tore Saxne, Pierra Geborek, Lillemor Skattum, Meliha C Kapetanovic
Objective: To study the impact of disease and treatment with DMARDs on antibody response elicited by either pneumococcal conjugate vaccine (PCV13) or pneumococcal polysaccharide vaccine (PPV23) in patients with SSc. Methods: Forty-four SSc patients and 49 controls received a dose of either PCV13 or PPV23. Twelve patients were treated with DMARDs. Antibody levels to pneumococcal polysaccharides 6B and 23 F were measured before and 4-6 weeks after vaccination using ELISA...
January 8, 2018: Rheumatology
https://www.readbyqxmd.com/read/29324986/the-impact-of-the-13-valent-pneumococcal-conjugate-vaccine-on-pneumococcal-carriage-in-the-community-acquired-pneumonia-immunization-trial-in-adults-capita-study
#6
Anna M M van Deursen, Marlies A van Houten, Chris Webber, Michael Patton, Daniel Scott, Scott Patterson, Qin Jiang, William C Gruber, Beate Schmoele-Thoma, Diederick E Grobbee, Marc J M Bonten, Elisabeth A M Sanders
Background: The impact of pneumococcal conjugate vaccination on the prevalence of nasopharyngeal carriage with pneumococci and other bacteria in adults is unknown. The direct effects of the 13-valent pneumococcal conjugate vaccine (PCV13) in community dwelling older adults was investigated as part of the randomized controlled Community Acquired Pneumonia immunization Trial in Adults (CAPiTA). Methods: We determined the carriage of S. pneumoniae, S. aureus, H. influenzae, and M...
January 6, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29323913/nanoparticles-with-cd44-targeting-and-ros-triggering-property-as-effective-in-vivo-antigen-delivery-system
#7
Xiaoyu Liang, Xuanling Li, Jianwei Duan, Youlu Chen, Xiaoli Wang, Liyun Pang, Deling Kong, Bing Song, Chen Li, Jing Yang
Currently, development of subunit vaccine based on recombinant antigens or peptides has gradually become an important alternative option for traditional vaccine. However, induction of potent immune response with desired efficacy remains a major challenge. The nanoparticle-based antigen delivery system has been considered a potential carrier system to improve the efficacy of subunit vaccine. In the present study, we have designed an immune-stimulatory delivery system by conjugating three-armed PLGA to PEG via the peroxalate ester bond which is sensitive to hydrogen peroxide (H2O2), a major reactive oxygen species (ROS)...
January 11, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29323879/malaria-derived-gpi-anchor-enhances-anti-pfs25-functional-antibodies-that-block-malaria-transmission
#8
Neeraj Kapoor, Ivana Vanjak, James Rozzelle, Aym Berges, Wei Chan, Gang Yin, Cuong Tran, Aaron K Sato, Alexander R Steiner, Thao P Pham, Ashley J Birkett, Carole Long, Jeff Fairman, Kazutoyo Miura
Malaria, one of the most common vector borne human diseas-es, is a major world health issue. In 2015 alone, more than 200 million people were infected with malaria, out of which, 429,000 died. Even though artemisinin-based combination therapies (ACT) are highly effective at treating malaria infections, novel efforts towards development of vaccines to prevent transmission are still needed. Pfs25, a post-fertilization stage parasite surface antigen, is a leading transmission-blocking vaccine (TBV) candidate. It is postulated that Pfs25 anchors to the cell membrane using a glycosylphosphatidyl-inositol (GPI) linker, which itself possesses proinflammatory properties...
January 11, 2018: Biochemistry
https://www.readbyqxmd.com/read/29318872/covalent-conjugation-of-peptide-antigen-to-mesoporous-silica-rods-to-enhance-cellular-responses
#9
Maxence O Dellacherie, Aileen W Li, Beverly Y Lu, David J Mooney
Short peptides are the minimal modality of antigen recognized by cellular immunity and are therefore considered a safe and highly specific source of antigen for vaccination. Nevertheless, successful peptide immunotherapy is limited by the short half-life of peptide antigens in vivo as well as their weak immunogenicity. We recently reported a vaccine strategy based on dendritic cell-recruiting Mesoporous Silica Rod (MSR) scaffolds to enhance T-cell responses against subunit antigen. In this study, we investigated the effect of covalently conjugating peptide antigens to MSRs to increase their retention in the scaffolds...
January 10, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29318106/pneumococcal-vaccination-in-older-persons-where-are-we-today
#10
REVIEW
Paul Van Buynder, Robert Booy
Disease due to Streptococcus pneumoniae, the pneumococcus, remains a major source of illness in older persons. Globally, it remains the most important pathogen in respiratory infection deaths. Conjugated pneumococcal vaccines are used extensively in national pediatric programs, whereas a polysaccharide vaccine is used in all age groups, but mainly in the elderly and for high-risk groups. Recent data from the Netherlands led to the licensing in many countries of conjugated pneumococcal vaccines for older persons...
2018: Pneumonia
https://www.readbyqxmd.com/read/29317512/streptococcus-pneumoniae-modulates-staphylococcus-aureus-biofilm-dispersion-and-the-transition-from-colonization-to-invasive-disease
#11
Ryan M Reddinger, Nicole R Luke-Marshall, Shauna L Sauberan, Anders P Hakansson, Anthony A Campagnari
Streptococcus pneumoniae and Staphylococcus aureus are ubiquitous upper respiratory opportunistic pathogens. Individually, these Gram-positive microbes are two of the most common causative agents of secondary bacterial pneumonia following influenza A virus infection, and they constitute a significant source of morbidity and mortality. Since the introduction of the pneumococcal conjugate vaccine, rates of cocolonization with both of these bacterial species have increased, despite the traditional view that they are antagonistic and mutually exclusive...
January 9, 2018: MBio
https://www.readbyqxmd.com/read/29313682/programmable-nucleic-acid-nanoswitches-for-the-rapid-single-step-detection-of-antibodies-in-bodily-fluids
#12
Alessandro Porchetta, Rudy Ippodrino, Bruna Marini, Arnaldo Caruso, Francesca Caccuri, Francesco Ricci
Antibody detection plays a pivotal role in the diagnosis of pathogens and monitoring the success of vaccine immunization. However, current serology techniques require multiple, time-consuming washing and incubation steps, which limit their applicability in point-of-care (POC) diagnostics and high-throughput assays. We developed here a nucleic acid nanoswitch platform able to instantaneously measure immunoglobulins of type G and E (IgG and IgE) levels directly in blood serum and other bodily fluids. The system couples the advantages of target-binding induced colocalization and nucleic acid conformational-change nanoswitches...
January 9, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29313476/serotype-distribution-of-clinical-streptococcus-pneumoniae-isolates-before-the-introduction-of-the-13-valent-pneumococcal-conjugate-vaccine-in-cambodia
#13
Malin Inghammar, Youlet By, Christina Farris, Thong Phe, Laurence Borand, Alexandra Kerleguer, Sophie Goyet, Vonthanak Saphonn, Chanleakhena Phoeung, Sirenda Vong, Blandine Rammaert, Charles Mayaud, Bertrand Guillard, Chadwick Yasuda, Matthew R Kasper, Gavin Ford, Steven W Newell, Ung Sam An, Buth Sokhal, Sok Touch, Paul Turner, Jan Jacobs, Mélina Messaoudi, Florence Komurian-Pradel, Arnaud Tarantola
Childhood vaccination with the 13-valent pneumococcal conjugate vaccine (PCV13) was introduced in Cambodia in January 2015. Baseline data regarding circulating serotypes are scarce. All microbiology laboratories in Cambodia were contacted for identification of stored isolates of Streptococcus pneumoniae from clinical specimens taken before the introduction of PCV13. Available isolates were serotyped using a multiplex polymerase chain reaction method. Among 166 identified isolates available for serotyping from patients with pneumococcal disease, 4% were isolated from upper respiratory samples and 80% were from lower respiratory samples, and 16% were invasive isolates...
January 8, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29309553/characteristics-and-serotype-distribution-of-childhood-cases-of-invasive-pneumococcal-disease-following-pneumococcal-conjugate-vaccination-in-england-and-wales-2006-2014
#14
Godwin Oligbu, Sarah Collins, Nick Andrews, Carmen L Sheppard, Norman K Fry, Mary P E Slack, Ray Borrow, Shamez N Ladhani
Background: The 7-valent and 13-valent pneumococcal conjugate vaccines (PCV7 and PCV13, respectively) are highly effective in preventing invasive pneumococcal disease (IPD) caused by vaccine serotypes. Vaccine failure (vaccine-type IPD after age-appropriate immunization) is rare. Little is known about the risk, clinical characteristics, or outcomes of PCV13 compared to PCV7 vaccine failure. Methods: Public Health England conducts IPD surveillance and provides a national reference service for serotyping pneumococcal isolates in England and Wales...
October 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29306507/immunogenicity-and-safety-of-a-novel-tetanus-toxoid-conjugated-anti-gastrin-vaccine-in-balb-c-mice
#15
Qing He, Hua Gao, Meng Gao, Shengmei Qi, Kun Yang, Yingqi Zhang, Junzhi Wang
The objective of this study is to determine the immunogenicity and safety of our novel anti-gastrin vaccine that is composed of the common amino-terminal portions of human carboxy-amidated gastrin-17 (G17) and glycine-extended gastrin-17 (gly-G17) as well as the common carboxy-terminal portion of the gastrin precursor progastrin (in a 50:50 mixture) all covalently linked to tetanus toxoid (TT) via peptide spacers. The vaccine, or immunogen, was injected intramuscularly into the legs of BALB/c mice, which produced high serum titres of specific IgG antibodies and IFN-γ in their spleen cells, identifiable by enzyme-linked immunosorbent assay (ELISA) and enzyme-linked immunospot assay (ELISPOT), respectively...
January 3, 2018: Vaccine
https://www.readbyqxmd.com/read/29304066/burden-of-invasive-pneumococcal-disease-among-children-in-rural-mozambique-2001-2012
#16
Betuel Sigaúque, Jennifer R Verani, Sérgio Massora, Delfino Vubil, Llorenç Quintó, Sozinho Acácio, Inácio Mandomando, Quique Bassat, Tacilta Nhampossa, Fabiana Pimenta, Charfudin Sacoor, Maria da Gloria Carvalho, Eusebio Macete, Pedro L Alonso
BACKGROUND: Invasive pneumococcal disease (IPD) is a major cause of illness and death among children worldwide. 10-valent pneumococcal conjugate vaccine (PCV10) was introduced as part of the Mozambican routine immunization program in April 2013. We characterized the IPD burden in a rural area of Mozambique before PCV introduction and estimated the potential impact of this intervention. METHODS: We conducted population-based surveillance for IPD, defined as S. pneumoniae isolated from blood or cerebrospinal fluid, among children <5 years old admitted to Manhiça District Hospital, a referral hospital in a rural area with high prevalence of human immunodiciency virus infection...
2018: PloS One
https://www.readbyqxmd.com/read/29290234/bacterial-meningitis-antibiotic-treatment
#17
R Cohen, J Raymond, L Hees, D Pinquier, E Grimprel, C Levy
The implementation of pneumococal conjugate vaccines (PCVs) 7 then 13 valent (Prevenar13®) in 2010-2011 has significantly changed the profile of pneumococcal meningitis. Since 3 years, the National Pediatric Meningitis Network of the Pediatric Infectious Disease Group (GPIP) and the National Reference Centre of Pneumococci have reported no cases of meningitis due to pneumococcus resistant to third-generation cephalosporins (3GC): cefotaxime or ceftriaxone. In the light of these new data, vancomycin should no longer be prescribed at the initial phase of pneumococcal meningitis treatment (confirmed or only suspected) and this antibiotic should only be added when 3GC minimum inhibitory concentration of the strain isolated is greater than 0...
December 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29290229/antibiotic-treatment-of-lower-respiratory-tract-infections
#18
R Cohen, F Angoulvant, S Biscardi, F Madhi, F Dubos, Y Gillet
Lower respiratory tract infections, i.e., bronchitis, bronchiolitis, and pneumonia, are the second leading cause of antibiotic prescriptions. The vast majority of these infections are due to viruses and are self-limited diseases: most patients recover spontaneously. These two facts explain that antibiotic prescriptions must be limited to some clinical situations for which the diagnosis has to be done early. The first message of this manuscript is to strengthen non-antibiotic prescriptions in many situations such as bronchitis and bronchiolitis...
December 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29289561/haemophilus-influenzae-type-b-hib-seroprevalence-and-current-epidemiology-in-england-and-wales
#19
Sarah Collins, David Litt, Rachael Almond, Jamie Findlow, Ezra Linley, Mary Ramsay, Ray Borrow, Shamez Ladhani
Introduction The introduction of the Hib conjugate vaccine in the United Kingdom resulted in a rapid decline in invasive Hib disease across all age groups. However, a resurgence in 2000-2002 prompted the introduction of additional control measures, including a routine 12-month booster in 2006. Here we describe results from a national serosurvey in children eligible for the 12-month booster and recent H. influenzae epidemiology in England and Wales. Methods A national serosurvey was performed to determine the prevalence of anti-polyribosyl-phosphate (anti-PRP) IgG antibodies in 1,000 residual samples from children up to 8 years of age in 2013-14...
December 28, 2017: Journal of Infection
https://www.readbyqxmd.com/read/29289385/phenotypic-and-molecular-characterization-of-streptococcus-pneumoniae-in-pre-conjugate-vaccine-era-a-chinese-hospital-based-retrospective-study
#20
Ling Li, Jinjian Fu, Shunming Li, Dan Guo, Zhiyao Chen, Sidong Chen, Xiaohua Ye
BACKGROUND: Streptococcus pneumoniae (S. pneumoniae) is an important pathogen in causing global morbidity and mortality among children. This study aimed to determine phenotypic and molecular characteristics of S. pneumoniae causing infections in children under five years in China. METHODS: A hospital-based retrospective study was conducted. All 537 S. pneumoniae isolates were tested for antimicrobial susceptibility by E-test method, molecular characteristics including resistance genes, virulence genes and serotypes by multiplex polymerase chain reaction (PCR) method, and sequence types (STs) by sequencing seven housekeeping genes...
December 27, 2017: Vaccine
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