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https://www.readbyqxmd.com/read/27905974/dynamic-denominators-the-impact-of-seasonally-varying-population-numbers-on-disease-incidence-estimates
#1
Elisabeth Zu Erbach-Schoenberg, Victor A Alegana, Alessandro Sorichetta, Catherine Linard, Christoper Lourenço, Nick W Ruktanonchai, Bonita Graupe, Tomas J Bird, Carla Pezzulo, Amy Wesolowski, Andrew J Tatem
BACKGROUND: Reliable health metrics are crucial for accurately assessing disease burden and planning interventions. Many health indicators are measured through passive surveillance systems and are reliant on accurate estimates of denominators to transform case counts into incidence measures. These denominator estimates generally come from national censuses and use large area growth rates to estimate annual changes. Typically, they do not account for any seasonal fluctuations and thus assume a static denominator population...
October 12, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27903558/cost-effectiveness-analysis-of-routine-pneumococcal-vaccination-in-the-uk-a-comparison-of-the-phid-cv-vaccine-and-the-pcv-13-vaccine-using-a-markov-model
#2
Emmanuelle Delgleize, Oscar Leeuwenkamp, Eleni Theodorou, Nicolas Van de Velde
OBJECTIVES: In 2010, the 13-valent pneumococcal conjugate vaccine (PCV-13) replaced the 7-valent vaccine (introduced in 2006) for vaccination against invasive pneumococcal diseases (IPDs), pneumonia and acute otitis media (AOM) in the UK. Using recent evidence on the impact of PCVs and epidemiological changes in the UK, we performed a cost-effectiveness analysis (CEA) to compare the pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) with PCV-13 in the ongoing national vaccination programme...
November 30, 2016: BMJ Open
https://www.readbyqxmd.com/read/27903079/preclinical-evaluation-of-a-replication-deficient-recombinant-adenovirus-serotype-5-vaccine-expressing-guanylate-cyclase-c-and-the-padre-t-helper-epitope
#3
Adam Eugene Snook, Trevor R Baybutt, Terry Hyslop, Scott Arthur Waldman
There is an unmet need for improved therapeutics for colorectal cancer, the second leading cause of cancer mortality worldwide. Adjuvant chemotherapy only marginally improves survival in some patients, and has no benefit in others, underscoring the clinical opportunity for novel immunotherapeutic approaches to improve survival in colorectal cancer. In that context, guanylate cyclase C (GUCY2C) is an established biomarker and therapeutic target for metastatic colorectal cancer with immunological characteristics that promote durable antitumor efficacy without autoimmunity...
November 30, 2016: Human Gene Therapy Methods
https://www.readbyqxmd.com/read/27902409/prevention-of-herpes-zoster-and-its-complications-from-the-clinic-to-the-real-life-experience-with-the-vaccine
#4
Giovanni Gabutti, Nicoletta Valente, Parvanè Kuhdari, Silvia Lupi, Armando Stefanati
The Herpes Zoster (HZ) is an acute viral illness characterized by a vesicular rash, with unilateral distribution, which can eventually cause severe complications, such as the post-herpetic neuralgia (PHN), the ophthalmic zoster, stroke or other neurological complications. In Europe, an incidence between 2.0 and 4.6 cases per 1,000 persons-year is estimated, with an increase after 50 years of age. Currently, the therapeutic options for HZ are only partially effective to limit the acute phase, while the management of complications is frequently complex and not satisfactory...
November 4, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27900264/a-genomic-study-on-distribution-of-human-leukocyte-antigen-hla-a-and-hla-b-alleles-in-lak-population-of-iran
#5
Farhad Shahsavar, Ali-Mohammad Varzi, Seyyed Amir Yasin Ahmadi
Anthropological studies based on the highly polymorphic gene, human leukocyte antigen (HLA), provide useful information for bone marrow donor registry, forensic medicine, disease association studies, as well as infertility treatment, designing peptide vaccines against tumors, and infectious or autoimmune diseases. The aim of this study was to determine HLA-A and HLA-B allele frequencies in 100 unrelated Lak/lᴂk/individuals from Lorestan province of Iran. Finally, we compared the results with that previously described in Iranian population...
March 2017: Genomics Data
https://www.readbyqxmd.com/read/27899335/design-and-characterization-of-plasmids-encoding-antigenic-peptides-of-aha1-from-aeromonas-hydrophila-as-prospective-fish-vaccines
#6
Pradipta R Rauta, Bismita Nayak, Gabriel A Monteiro, Marília Mateus
The current investigation aimed at designing DNA vaccines against Aeromonas hydrophila infections. The DNA vaccine candidates were designed to express two antigenic outer membrane protein (Aha1) peptides and to be delivered by a nanoparticle-based delivery system. Gene sequences of conserved regions of antigenic Aha1 [aha1(211-381), aha1(211-381)opt, aha1(703-999) and aha1(703-999)opt] were cloned into pVAX-GFP expression vector. The selected DNA vaccine candidates were purified from E. coli DH5α and transfected into Chinese hamster ovary cells...
November 26, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27893793/field-trial-of-an-aerially-distributed-tuberculosis-vaccine-in-a-low-density-wildlife-population-of-brushtail-possums-trichosurus-vulpecula
#7
Graham Nugent, Ivor J Yockney, E Jackie Whitford, Martin L Cross, Frank E Aldwell, Bryce M Buddle
Oral-delivery Mycobacterium bovis bacillus Calmette-Guérin (BCG) vaccine in a lipid matrix has been shown to confer protection against M. bovis infection and reduce the severity of tuberculosis (TB) when fed to brushtail possums (Trichosurus vulpecula), the major wildlife vector of bovine TB in New Zealand. Here we demonstrate the feasibility of aerial delivery of this live vaccine in bait form to an M. bovis-infected wild possum population, and subsequently assess vaccine uptake and field efficacy. Pre-trial studies indicated a resident possum population at very low density (<0...
2016: PloS One
https://www.readbyqxmd.com/read/27889225/cost-estimate-and-proposal-for-a-development-impact-bond-for-canine-rabies-elimination-by-mass-vaccination-in-chad
#8
Franziska Anyiam, Monique Lechenne, Rolande Mindekem, Assandi Oussigéré, Service Naissengar, Idriss Oumar Alfaroukh, Celine Mbilo, Daugla Doumagoum Moto, Paul G Coleman, Nicole Probst-Hensch, Jakob Zinsstag
Close to 960,000 humans humans die of rabies each year, most of them in Africa and Asia. Clinical rabies can be prevented by post-exposure prophylaxis (PEP). However, PEP is commonly not available or not affordable in developing countries. Another strategy besides treating exposed humans is the vaccination of vector species. In developing countries, 8.36 vector is the domestic canine, that, once infected, is a serious threat to humans. After a successful mass vaccination of 70% of the dogs in N'Djaména, we report here a cost-estimate for a national rabies elimination campaign for Chad...
November 23, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27886508/immunization-and-targeted-destruction-of-networks-using-explosive-percolation
#9
Pau Clusella, Peter Grassberger, Francisco J Pérez-Reche, Antonio Politi
A new method ("explosive immunization") is proposed for immunization and targeted destruction of networks. It combines the explosive percolation (EP) paradigm with the idea of maintaining a fragmented distribution of clusters. The ability of each node to block the spread of an infection (or to prevent the existence of a large cluster of connected nodes) is estimated by a score. The algorithm proceeds by first identifying low score nodes that should not be vaccinated or destroyed, analogously to the links selected in EP if they do not lead to large clusters...
November 11, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27885442/patterns-and-trends-of-pediatric-bloodstream-infections-a-7-year-surveillance-study
#10
N Buetti, A Atkinson, L Kottanattu, J Bielicki, J Marschall, A Kronenberg
We characterize the epidemiology of pediatric bloodstream infections (BSIs) in Switzerland. We analyzed pathogen distribution and resistance patterns in monomicrobial and polymicrobial BSIs in children from 2008 to 2014 using data from the Swiss antibiotic resistance centre (ANRESIS). A confirmatory statistical analysis was performed comparing pathogens and resistance across 20 acute care hospitals. We identified 3,067 bacteremia episodes, of which 1,823 (59 %) were considered true BSI episodes. Overall, S...
November 24, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27882679/circulation-of-porcine-parvovirus-types-1-through-6-in-serum-samples-obtained-from-six-commercial-polish-pig-farms
#11
J Cui, K Biernacka, J Fan, P F Gerber, T Stadejek, T Opriessnig
Porcine parvoviruses are small non-enveloped DNA viruses, very resistant to inactivation, and ubiquitous in the global pig population. Porcine parvovirus type 1 (PPV1) has been known since the 1960s and is a major causative agent of reproductive failure in breeding herds. During the last decade, several new parvoviruses have been identified in pigs by molecular methods and have been consecutively designated as PPV2 through PPV6. Epidemiology data for these viruses are limited, and the impact of these newly recognized parvoviruses on pigs is largely unknown...
November 24, 2016: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/27878603/-the-epidemiology-of-varicella-disease-in-germany-after-introduction-of-a-vaccination-recommendation-analysis-of-mandatory-and-sentinel-data-between-2002-and-2014
#12
Jane Hecht, Anette Siedler
BACKGROUND: Since 2004 a single varicella vaccination for all infants aged 11-14 months has been recommended in Germany and since 2009 a second dose at the age of 15-23 months is recommended. Vaccination coverage after 24 months rose from 43% in 2006 to 87.5% in 2012. A mandatory notification system was introduced in the New Federal States (NFS) between 2002 and 2009 and nationwide in 2013. A national sentinel system has been in place since 2005. OBJECTIVE AND METHOD: We analyzed both data sources to describe the varicella epidemiology related to vaccination coverage after initiation of routine childhood varicella vaccination and to evaluate both notification systems regarding informative value and data quality...
November 23, 2016: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/27870643/yellow-fever-vaccine-17d-administered-to-healthy-women-aged-between-40-and-54-years-halves-breast-cancer-risk-an-observational-study
#13
Giuseppe Mastrangelo, Sofia Pavanello, Emanuela Fadda, Alessandra Buja, Ugo Fedeli
Transcripts of human endogenous retrovirus K are expressed in most breast cancers (BCs). Yellow fever vaccine 17D (YFV) expresses a protein with a closely homologous epitope. Cross-reactive immunity could hypothetically inhibit BC growth at least in women aged around 50 years at diagnosis, in whom the prognosis of BC was found to be better than that in women younger or older. A cohort of 12 804 women who received YFV in the Veneto Region, Italy, was divided into two subcohorts according to age at vaccination and followed up through the Veneto Tumor Registry...
November 18, 2016: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/27869792/genomic-diversity-in-onchocerca-volvulus-and-its-wolbachia-endosymbiont
#14
Young-Jun Choi, Rahul Tyagi, Samantha N McNulty, Bruce A Rosa, Philip Ozersky, John Martin, Kymberlie Hallsworth-Pepin, Thomas R Unnasch, Carmelle T Norice, Thomas B Nutman, Gary J Weil, Peter U Fischer, Makedonka Mitreva
Ongoing elimination efforts have altered the global distribution of Onchocerca volvulus, the agent of river blindness, and further population restructuring is expected as efforts continue. Therefore, a better understanding of population genetic processes and their effect on biogeography is needed to support elimination goals. We describe O. volvulus genome variation in 27 isolates from the early 1990s (before widespread mass treatment) from four distinct locales: Ecuador, Uganda, the West African forest and the West African savanna...
November 21, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27866265/proteomic-analysis-of-fasciola-hepatica-excretory-and-secretory-products-fhesps-involved-in-interacting-with-host-pbmcs-and-cytokines-by-shotgun-lc-ms-ms
#15
Qing Liu, Si-Yang Huang, Dong-Mei Yue, Jin-Lei Wang, Yujian Wang, Xiangrui Li, Xing-Quan Zhu
Fasciola hepatica is a helminth parasite with a worldwide distribution, which can cause chronic liver disease, fasciolosis, leading to economic losses in the livestock and public health in many countries. Control is mostly reliant on the use of drugs, and as a result, drug resistance has now emerged. The identification of F. hepatica genes involved in interaction between the parasite and host immune system is utmost important to elucidate the evasion mechanisms of the parasite and develop more effective strategies against fasciolosis...
November 19, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27863543/reduced-humoral-immunity-and-atypical-cell-mediated-immunity-in-response-to-vaccination-in-cows-naturally-infected-with-bovine-leukemia-virus
#16
Meredith C Frie, Kelly R Sporer, Joseph C Wallace, Roger K Maes, Lorraine M Sordillo, Paul C Bartlett, Paul M Coussens
Bovine leukemia virus (BLV) is a retrovirus that is widely distributed across US dairy herds: over 83% of herds are BLV-infected and within-herd infection rates can approach 50%. BLV infection reduces both animal longevity and milk production and can interfere with normal immune health. With such a high prevalence of BLV infection in dairy herds, it is essential to understand the circumstances by which BLV negatively affects the immune system of infected cattle. To address this question, BLV- and BLV+ adult, lactating Holstein dairy cows were vaccinated with Bovi-Shield GOLD(®) FP(®) 5 L5 HB and their immune response to vaccination was measured over the course of 28days...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27860313/origin-distribution-and-potential-risk-factors-associated-with-influenza-a-virus-in-swine-in-two-production-systems-in-guatemala
#17
Ana S Gonzalez-Reiche, Ana L Ramírez, María L Müller, David Orellana, Silvia M Sosa, Pablo Ola, Jorge Paniagua, Lucía Ortíz, Jorge Hernandez, Celia Cordón-Rosales, Daniel R Perez
BACKGROUND: Guatemala is the country with the largest swine production in Central America; however, evidence of influenza A virus (IAV) in pigs has not been clearly delineated. OBJECTIVES: In this study, we analyzed the presence and spatial distribution of IAV in commercial and backyard swine populations. METHODS: Samples from two nation-wide surveys conducted in 2010 and 2011 were tested using virological (rRT-PCR and virus isolation) and serological (ELISA and Hemagglutination Inhibition) assays to detect IAV...
November 12, 2016: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/27855206/zika-prvabc59-infection-is-associated-with-t-cell-infiltration-and-neurodegeneration-in-cns-of-immunocompetent-neonatal-c57bl-6-mice
#18
Mohanraj Manangeeswaran, Derek D C Ireland, Daniela Verthelyi
The recent spread of Zika virus (ZIKV) and its association with increased rates of Guillain Barre and other neurological disorders as well as congenital defects that include microcephaly has created an urgent need to develop animal models to examine the pathogenesis of the disease and explore the efficacy of potential therapeutics and vaccines. Recently developed infection models for ZIKV utilize mice defective in interferon responses. In this study we establish and characterize a new model of peripheral ZIKV infection using immunocompetent neonatal C57BL/6 mice and compare its clinical progression, virus distribution, immune response, and neuropathology with that of C57BL/6-IFNAR KO mice...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27852675/serotype-distribution-population-structure-and-antimicrobial-resistance-of-group-b-streptococcus-strains-recovered-from-colonized-pregnant-women
#19
Sarah Teatero, Patricia Ferrieri, Irene Martin, Walter Demczuk, Allison McGeer, Nahuel Fittipaldi
Using serotyping, multilocus sequence typing and whole-genome sequencing (WGS) of selected strains, we studied the population structure of 102 group B Streptococcus isolates prospectively sampled in 2014 from vaginal/rectal swabs of healthy pregnant women in metropolitan Toronto, Canada. We also determined the susceptibilities of all colonizing isolates to penicillin, erythromycin, clindamycin, tetracycline and other antimicrobial agents. Overall, we observed a high rate of tetracycline resistance (89%) among colonizing GBS...
November 16, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27851765/development-of-a-freeze-dried-heat-stable-influenza-subunit-vaccine-formulation
#20
Alexander Flood, Marcus Estrada, David McAdams, Yuhua Ji, Dexiang Chen
An influenza pandemic remains a major public health concern. A key strategy to prevent a pandemic is to stockpile and pre-position stable influenza vaccine to allow rapid deployment in response to an outbreak. However, most influenza vaccines today are formulated as liquids that are stable only within a temperature range of 2°C to 8°C and require use of a cold chain, making vaccine transportation, distribution, and storage complicated and expensive, particularly for developing countries. To support the National Strategy for Pandemic Influenza preparedness in the United States and internationally, we developed two lead dry formulations of stable H1N1 influenza subunit vaccines using freeze-drying technology...
2016: PloS One
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