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https://www.readbyqxmd.com/read/29741721/update-from-the-advisory-committee-on-immunization-practices
#1
Sean T O'Leary, David W Kimberlin, Yvonne A Maldonado
The Advisory Committee on Immunization Practices (ACIP), a group of medical and public health experts, meets 3 times per year to develop recommendations for vaccine use in the United States. The group has 15 voting members, each of whom is appointed to a 4-year term. ACIP members and Centers for Disease Control and Prevention (CDC) staff discuss the epidemiology of vaccine-preventable diseases and vaccine research, effectiveness, safety data, and clinical trial results. The ACIP met on October 25 and 26, 2017, to discuss herpes zoster vaccine, the child/adolescent and adult vaccination schedules, Japanese encephalitis (JE) epidemiology and vaccines, pneumococcal vaccines, anthrax vaccines and disaster preparedness, hepatitis A outbreaks, influenza surveillance and vaccination coverage, vaccine safety, and considerations for a potential third dose of measles-mumps-rubella (MMR) vaccine to combat ongoing mumps outbreaks...
May 7, 2018: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/29740033/a-bivalent-protein-r-pb-comprising-pa-and-bcla-immunodominant-regions-for-comprehensive-protection-against-bacillus-anthracis
#2
Saugata Majumder, Shreya Das, Vikas Somani, Shivakiran S Makam, Kingston J Joseph, Rakesh Bhatnagar
Anthrax infection is primarily initiated by B. anthracis endospores that on entry into the host germinate to vegetative cells and cause severe bacteremia and toxaemia employing an array of host colonisation factors and the lethal tripartite toxin. The protective efficacy of conventional protective antigen (PA) based anthrax vaccines is improved by co-administration with inactivated spores or its components. In the present study, using structural vaccinology rationale we synthesized a bivalent protein r-PB encompassing toxin (PAIV) and spore components (BclACTD) and characterized its protective efficacy against B...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29725025/single-vector-platform-vaccine-protects-against-lethal-respiratory-challenge-with-tier-1-select-agents-of-anthrax-plague-and-tularemia
#3
Qingmei Jia, Richard Bowen, Barbara Jane Dillon, Saša Masleša-Galić, Brennan T Chang, Austin C Kaidi, Marcus A Horwitz
Bacillus anthracis, Yersinia pestis, and Francisella tularensis are the causative agents of Tier 1 Select Agents anthrax, plague, and tularemia, respectively. Currently, there are no licensed vaccines against plague and tularemia and the licensed anthrax vaccine is suboptimal. Here we report F. tularensis LVS ΔcapB (Live Vaccine Strain with a deletion in capB)- and attenuated multi-deletional Listeria monocytogenes (Lm)-vectored vaccines against all three aforementioned pathogens. We show that LVS ΔcapB- and Lm-vectored vaccines express recombinant B...
May 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29686670/alum-toll-like-receptor-7-adjuvant-enhances-the-expansion-of-memory-b-cell-compartment-within-the-draining-lymph-node
#4
Hoa Thi My Vo, Barbara Christiane Baudner, Stefano Sammicheli, Matteo Iannacone, Ugo D'Oro, Diego Piccioli
Vaccination is one of the most cost-effective health interventions and, with the exception of water sanitization, no other action has had such a major effect in mortality reduction. Combined with other approaches, such as clean water, better hygiene, and health education, vaccination contributed to prevent millions of cases of deaths among children under 5 years of age. New or improved vaccines are needed to fight some vaccine-preventable diseases that are still a threat for the public health globally, as reported also in the Global Vaccine Action Plan (GVAP) endorsed by the World Health Assembly in 2012...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29616046/trimethyl-chitosan-nanoparticles-encapsulated-protective-antigen-protects-the-mice-against-anthrax
#5
Anshu Malik, Manish Gupta, Rajesh Mani, Himanshu Gogoi, Rakesh Bhatnagar
Anthrax is an era old deadly disease against which there are only two currently available licensed vaccines named anthrax vaccine adsorbed and precipitated (AVP). Though they can provide a protective immunity, their multiple side-effects owing to their ill-defined composition and presence of toxic proteins (LF and EF) of Bacillus anthracis , the causative organism of anthrax, in the vaccine formulation makes their widespread use objectionable. Hence, an anthrax vaccine that contains well-defined and controlled components would be highly desirable...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29615497/novel-broadly-reactive-anticapsular-antibodies-against-carbapenem-resistant-klebsiella-pneumoniae-protect-from-infection
#6
Elizabeth Diago-Navarro, Michael P Motley, Gonzalo Ruiz-Peréz, Winnie Yu, Julianne Austin, Bruna M S Seco, Guozhi Xiao, Aniska Chikhalya, Peter H Seeberger, Bettina C Fries
Carbapenem-resistant (CR) sequence type 258 (ST258) Klebsiella pneumoniae has become an urgent health care threat, causing an increasing number of high-mortality infections. Its resistance to numerous antibiotics and threat to immunocompromised patients necessitate finding new therapies to combat these infections. Previous successes in the laboratory, as well as the conservation of capsular polysaccharide (CPS) among the members of the ST258 clone, suggest that monoclonal antibody (MAb) therapy targeting the outer polysaccharide capsule of K...
April 3, 2018: MBio
https://www.readbyqxmd.com/read/29487236/role-of-the-antigen-capture-pathway-in-the-induction-of-a-neutralizing-antibody-response-to-anthrax-protective-antigen
#7
Anita Verma, Miriam M Ngundi, Gregory A Price, Kazuyo Takeda, James Yu, Drusilla L Burns
Toxin neutralizing antibodies represent the major mode of protective immunity against a number of toxin-mediated bacterial diseases, including anthrax; however, the cellular mechanisms that lead to optimal neutralizing antibody responses remain ill defined. Here we show that the cellular binding pathway of anthrax protective antigen (PA), the binding component of anthrax toxin, determines the toxin neutralizing antibody response to this antigen. PA, which binds cellular receptors and efficiently enters antigen-presenting cells by receptor-mediated endocytosis, was found to elicit robust anti-PA IgG and toxin neutralizing antibody responses...
February 27, 2018: MBio
https://www.readbyqxmd.com/read/29415029/rates-and-risk-factors-for-human-cutaneous-anthrax-in-the-country-of-georgia-national-surveillance-data-2008-2015
#8
Ana Kasradze, Diana Echeverria, Khatuna Zakhashvili, Christian Bautista, Nicholas Heyer, Paata Imnadze, Veriko Mitrskhulava
INTRODUCTION: Anthrax is endemic in the country of Georgia. The most common cutaneous anthrax form accounts for 95% of anthrax cases and often is self-resolving. Humans are infected from processing contaminated animal products, contacting sick animals, or by insect bites. OBJECTIVE: We aimed to describe the burden of human cutaneous anthrax and associated risk factors using the national surveillance data. METHODS: We extracted all human cutaneous anthrax cases from Electronic Integrated Disease Surveillance System (EIDSS) from 1 January 2008 to 31 December 2015...
2018: PloS One
https://www.readbyqxmd.com/read/29321308/sustained-specific-and-cross-reactive-t-cell-responses-to-zika-and-dengue-virus-ns3-in-west-africa
#9
Bobby Brooke Herrera, Wen-Yang Tsai, Charlotte A Chang, Donald J Hamel, Wei-Kung Wang, Yichen Lu, Souleymane Mboup, Phyllis J Kanki
Recent studies on the role of T cells in Zika virus (ZIKV) infection have shown that T cell responses to Asian ZIKV infection are important for protection, and that previous dengue virus (DENV) exposure amplifies the protective T cell response to Asian ZIKV. Human T cell responses to African ZIKV infection, however, remain unexplored. Here, we utilized the modified anthrax toxin delivery system to develop a flavivirus enzyme-linked immunosorbent spot (ELISPOT) assay. Using human ZIKV and DENV samples from Senegal, West Africa, our results demonstrate specific and cross-reactive T cell responses to nonstructural protein 3 (NS3)...
April 1, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29303078/molecular-adjuvants-based-on-plasmids-encoding-protein-aggregation-domains-affect-bone-marrow-niche-homeostasis
#10
Maria Giovanna Sabbieti, Giovanna Lacava, Andrea Amaroli, Luigi Marchetti, Roberta Censi, Piera Di Martino, Dimitrios Agas
BACKGROUND: During last years, DNA vaccine immunogenicity has been optimized by the employment of co-stimulatory molecules and molecular adjuvants. It has been reported that plasmid (pATRex), encompassing the DNA sequence for the von Willebrand A (vWA/A) domain of the Anthrax Toxin Receptor-1 (ANTXR-1, alias TEM8, Tumor Endothelial Marker 8), acts as strong immune adjuvant by inducing formation of insoluble intracellular aggregates. Markedly, we faced with upsetting findings regarding the safety of pATRex as adjuvant since the aggregosome formation prompted to osteopenia in mice...
February 1, 2018: Current Gene Therapy
https://www.readbyqxmd.com/read/29155651/enhancing-surveillance-and-diagnostics-in-anthrax-endemic-countries
#11
Antonio R Vieira, Johanna S Salzer, Rita M Traxler, Katherine A Hendricks, Melissa E Kadzik, Chung K Marston, Cari B Kolton, Robyn A Stoddard, Alex R Hoffmaster, William A Bower, Henry T Walke
Naturally occurring anthrax disproportionately affects the health and economic welfare of poor, rural communities in anthrax-endemic countries. However, many of these countries have limited anthrax prevention and control programs. Effective prevention of anthrax outbreaks among humans is accomplished through routine livestock vaccination programs and prompt response to animal outbreaks. The Centers for Disease Control and Prevention uses a 2-phase framework when providing technical assistance to partners in anthrax-endemic countries...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29036392/update-from-the-advisory-committee-on-immunization-practices
#12
Sean T O'Leary, David W Kimberlin
The Advisory Committee on Immunization Practices (ACIP), a group of medical and public health experts, meets 3 times per year to develop recommendations for vaccine use in the United States. The group has 15 voting members, and each member's term is 4 years. ACIP members and Centers for Disease Control and Prevention (CDC) staff discuss the epidemiology of vaccine-preventable diseases and vaccine research, effectiveness, safety data, and clinical trial results. Representatives from the American Academy of Pediatrics (Carrie L...
November 24, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/29028799/modeling-the-environmental-suitability-of-anthrax-in-ghana-and-estimating-populations-at-risk-implications-for-vaccination-and-control
#13
Ian T Kracalik, Ernest Kenu, Evans Nsoh Ayamdooh, Emmanuel Allegye-Cudjoe, Paul Nokuma Polkuu, Joseph Asamoah Frimpong, Kofi Mensah Nyarko, William A Bower, Rita Traxler, Jason K Blackburn
Anthrax is hyper-endemic in West Africa. Despite the effectiveness of livestock vaccines in controlling anthrax, underreporting, logistics, and limited resources makes implementing vaccination campaigns difficult. To better understand the geographic limits of anthrax, elucidate environmental factors related to its occurrence, and identify human and livestock populations at risk, we developed predictive models of the environmental suitability of anthrax in Ghana. We obtained data on the location and date of livestock anthrax from veterinary and outbreak response records in Ghana during 2005-2016, as well as livestock vaccination registers and population estimates of characteristically high-risk groups...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28988866/changing-livestock-vaccination-policy-alters-the-epidemiology-of-human-anthrax-georgia-2000-2013
#14
Ian Kracalik, Lile Malania, Mariam Broladze, Archil Navdarashvili, Paata Imnadze, Sadie J Ryan, Jason K Blackburn
Anthrax is a widely spread zoonotic disease found on nearly every continent. To control the disease in humans and animals, annual livestock vaccination is recommended. However, in 2007, the country of Georgia ended its policy of compulsory annual livestock anthrax vaccination. Our objective was to assess how the epidemiology of human anthrax has evolved from 2000-2013 in Georgia, in the wake of this cessation. We used passive surveillance data on epidemiological surveys of human anthrax case patients. Risk factors and rates of self-reported sources of infection were compared, before and after the change in livestock vaccination policy...
October 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28979006/anthrax-where-margins-are-merging-between-emerging-threats-and-bioterrorism
#15
Dibyendu Banerjee, Baishali Chakraborty, Banya Chakraborty
National Institute of Allergy and Infectious Diseases has classified all the emerging infectious diseases agents under three categories. Among Category A priority pathogens comes Bacillus anthracis -the causative agent of Anthrax. It is a gram positive spore bearing bacteria, and the disease is typically associated with grazing animals, and affects the people as a zoonosis. The disease can be classically transmitted by three routes namely: cutaneous, gastrointestinal and pulmonary, with a fourth route recently identified as "injection anthrax", seen in intravenous drug abusers...
September 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28882176/use-of-the-mice-passive-protection-test-to-evaluate-the-humoral-response-in-goats-vaccinated-with-sterne-34f2-live-spore-vaccine
#16
P H Phaswana, O C Ndumnego, S M Koehler, W Beyer, J E Crafford, H van Heerden
The Sterne live spore vaccine (34F2) is the most widely used veterinary vaccine against anthrax in animals. Antibody responses to several antigens of Bacillus anthracis have been described with a large focus on those against protective antigen (PA). The focus of this study was to evaluate the protective humoral immune response induced by the live spore anthrax vaccine in goats. Boer goats vaccinated twice (week 0 and week 12) with the Sterne live spore vaccine and naive goats were used to monitor the anti-PA and toxin neutralizing antibodies at week 4 and week 17 (after the second vaccine dose) post vaccination...
September 7, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28877928/anthrax-vaccine-precipitated-induces-edema-toxin-neutralizing-edema-factor-specific-antibodies-in-human-recipients
#17
Eric K Dumas, Timothy Gross, Jason Larabee, Lance Pate, Hannah Cuthbertson, Sue Charlton, Bassam Hallis, Renata J M Engler, Limone C Collins, Christina E Spooner, Hua Chen, Jimmy Ballard, Judith A James, A Darise Farris
Edema toxin (ET), composed of edema factor (EF) and protective antigen (PA), is a virulence factor of Bacillus anthracis that alters host immune cell function and contributes to anthrax disease. Anthrax vaccine precipitated (AVP) contains low but detectable levels of EF and can elicit EF-specific antibodies in human recipients of AVP. Active and passive vaccination of mice with EF can contribute to protection from challenge with Bacillus anthracis spores or ET. This study compared humoral responses to ET in recipients of AVP ( n = 33) versus anthrax vaccine adsorbed (AVA; n = 66), matched for number of vaccinations and time postvaccination, and further determined whether EF antibodies elicited by AVP contribute to ET neutralization...
November 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28829806/genome-engineering-in-bacillus-anthracis-using-tyrosine-site-specific-recombinases
#18
Andrei P Pomerantsev, Rita M McCall, Margaret Chahoud, Nathan K Hepler, Rasem Fattah, Stephen H Leppla
Tyrosine site-specific recombinases (T-SSR) are polynucleotidyltransferases that catalyze cutting and joining reactions between short specific DNA sequences. We developed three systems for performing genetic modifications in Bacillus anthracis that use T-SSR and their cognate target sequences, namely Escherichia coli bacteriophage P1 Cre-loxP, Saccharomyces cerevisiae Flp-FRT, and a newly discovered IntXO-PSL system from B. anthracis plasmid pXO1. All three tyrosine recombinase systems were used for creation of a B...
2017: PloS One
https://www.readbyqxmd.com/read/28774566/correlation-between-anthrax-lethal-toxin-neutralizing-antibody-levels-and-survival-in-guinea-pigs-and-nonhuman-primates-vaccinated-with-the-av7909-anthrax-vaccine-candidate
#19
Vladimir Savransky, Jeffry D Shearer, Melicia R Gainey, Daniel C Sanford, Gloria S Sivko, Gregory V Stark, Na Li, Boris Ionin, Michael J Lacy, Mario H Skiadopoulos
The anthrax vaccine candidate AV7909 is being developed as a next generation vaccine for a post-exposure prophylaxis (PEP) indication against anthrax. AV7909 consists of the Anthrax Vaccine Adsorbed (AVA, BioThrax®) bulk drug substance adjuvanted with the immunostimulatory oligodeoxynucleotide (ODN) compound, CPG 7909. The addition of CPG 7909 to AVA enhances both the magnitude and the kinetics of antibody responses in animals and human subjects, making AV7909 a suitable next-generation vaccine for use in a PEP setting...
September 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28762675/major-birth-defects-after-vaccination-reported-to-the-vaccine-adverse-event-reporting-system-vaers-1990-to-2014
#20
Pedro L Moro, Janet Cragan, Paige Lewis, Lakshmi Sukumaran
BACKGROUND: Major birth defects are important infant outcomes that have not been well studied in the postmarketing surveillance of vaccines given to pregnant women. We assessed the presence of major birth defects following vaccination in the Vaccine Adverse Event Reporting System (VAERS), a national spontaneous reporting system used to monitor the safety of vaccines in the United States. METHODS: We searched VAERS for reports of major birth defects during January 1, 1990, through December 31, 2014...
July 17, 2017: Birth Defects Research
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