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https://www.readbyqxmd.com/read/28107501/childhood-vaccine-acceptance-and-refusal-among-warao-amerindian-caregivers-in-venezuela-a-qualitative-approach
#1
Jochem Burghouts, Berenice Del Nogal, Angimar Uriepero, Peter W M Hermans, Jacobus H de Waard, Lilly M Verhagen
OBJECTIVES: Acceptance of childhood vaccination varies between societies, affecting worldwide vaccination coverage. Low coverage rates are common in indigenous populations where parents often choose not to vaccinate their children. We aimed to gain insight into reasons for vaccine acceptance or rejection among Warao Amerindians in Venezuela. METHODS: Based on records of vaccine acceptance or refusal, in-depth interviews with 20 vaccine-accepting and 11 vaccine-declining caregivers were performed...
2017: PloS One
https://www.readbyqxmd.com/read/28100618/influence-of-the-envelope-gp120-phe-43-cavity-on-hiv-1-sensitivity-to-adcc-responses
#2
Jérémie Prévost, Daria Zoubchenok, Jonathan Richard, Maxime Veillette, Beatriz Pacheco, Mathieu Coutu, Nathalie Brassard, Matthew S Parsons, Kiat Ruxrungtham, Torsak Bunupuradah, Sodsai Tovanabutra, Kwan-Ki Hwang, M Anthony Moody, Barton F Haynes, Mattia Bonsignori, Joseph Sodroski, Daniel E Kaufmann, George M Shaw, Agnès L Chenine, Andrés Finzi
: HIV-1-infected cells presenting envelope glycoproteins (Env) in the CD4-bound conformation on their surface are preferentially targeted by antibody-dependent cellular-mediated cytotoxicity (ADCC). HIV-1 has evolved sophisticated mechanisms to avoid exposure of Env ADCC epitopes by downregulating CD4 and by limiting the overall amount of Env on the cell surface. In HIV-1, substitution of large residues such as histidine or tryptophan for serine 375 (S375H/W) in the gp120 Phe 43 cavity, where Phe 43 of CD4 contacts gp120, results in the spontaneous sampling of an Env conformation closer to CD4-bound state...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28100374/-study-of-disease-burden-of-chronic-hepatitis-b-and-c-patients-in-shanghai-based-on-bronfenbrenner-s-ecological-systems-theory-a-community-based-survey
#3
H Ren, Y Shi, W Meng, J Y Hu, Y H Chen, Q C Pan
Objective: To systemically analyze family burden, quality of life of chronic hepatitis B and C patients in Shanghai and related influencing factors. Methods: A representative sample of chronic hepatitis patients (n=1 478) and their family members (n=1 478) was randomly selected through a multi-stage cluster sampling from 30 communities in 10 districts of Shanghai. One patient and one family member of each family were interviewed using different questionnaires to collect related information. Based on Bronfenbrenner' s ecological systems, psychological measurement, two-level random intercept model and multivariable structural equation model were applied to determine the effects and directions of the factors between life quality of chronic hepatitis patients and family burden...
January 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28100373/-epidemiological-characteristics-of-children-aged-1-4-years-without-timely-birth-dose-of-hepatitis-b-vaccine-vaccination-in-china-2014
#4
F Z Wang, G M Zhang, L P Shen, J H Liu, H Zheng, F Wang, N Miao, X J Sun, X F Liang, F Q Cui
Objective: To evaluate the epidemiological characteristics of the children aged 1-4 years without timely birth dose of hepatitis B vaccine (HepB(1)) vaccination. Methods: Based on the data from 160 disease surveillance points in 31 provinces of China, two-stage cluster random sampling was used to select the target population aged 1-4 years. A standard questionnaire was used to collect the information about the birth date, gender, ethnic group, place of birth, HepB immunization history of the children selected...
January 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28099706/factors-influencing-hpv-vaccine-delivery-by-healthcare-professionals-at-public-health-posts-in-s%C3%A3-o-paulo-brazil
#5
Daniella Figueroa-Downing, Maria Luiza Baggio, Misha L Baker, Ellen Dias De Oliveira Chiang, Luisa L Villa, Jose Eluf Neto, Dabney P Evans, Robert A Bednarczyk
OBJECTIVE: To assess the association between Brazilian healthcare providers' characteristics and their knowledge, perceptions, and practices regarding the HPV vaccine. METHODS: An observational cross-sectional study was conducted at five public health posts in São Paulo between July 28 and August 8, 2014. Healthcare professionals directly involved in patient care were asked to complete a written survey. Factors associated with routine verification of HPV vaccination status were evaluated using Poisson regression...
January 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28099486/do-thai-physicians-recommend-seasonal-influenza-vaccines-to-pregnant-women-a-cross-sectional-survey-of-physicians-perspectives-and-practices-in-thailand
#6
Prabda Praphasiri, Darunee Ditsungneon, Adena Greenbaum, Fatimah S Dawood, Pornsak Yoocharoen, Deborah M Stone, Sonja J Olsen, Kim A Lindblade, Charung Muangchana
BACKGROUND: Physicians play a major role in influencing acceptance and uptake of vaccines. However, little is known about physicians' perspectives on influenza vaccination of pregnant women in Thailand, for whom vaccine coverage is estimated at <1%. METHOD: In 2013, a self-administered questionnaire on physicians' perceptions, attitudes and practices related to influenza vaccination for pregnant women was distributed to 1,134 hospitals with an antenatal care clinic (ANC) in Thailand...
2017: PloS One
https://www.readbyqxmd.com/read/28097690/an-overview-of-structural-features-of-antibacterial-glycoconjugate-vaccines-that-influence-their-immunogenicity
#7
REVIEW
Farjana Khatun, Rachel J Stephenson, Istvan Toth
Bacterial cell-surface-derived or mimicked carbohydrate moieties that act as protective antigens are used in the development of antibacterial glycoconjugate vaccines. The carbohydrate antigen must have a minimum length or size to maintain the conformational structure of the antigenic epitope(s). The presence or absence of O-acetate, phosphate, glycerol phosphate and pyruvate ketal plays a vital role in defining the immunogenicity of the carbohydrate antigen. The nature of the carrier protein, spacer and conjugation pattern used to develop the glycoconjugate vaccine also defines its overall spatial orientation which in turn affects its avidity and selectivity of interaction with the desired target(s)...
November 7, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28095967/intravenous-immunoglobulin-therapy-in-pediatric-narcolepsy-a-nonrandomized-open-label-controlled-longitudinal-observational-study
#8
Michel Lecendreux, Johanna Berthier, Jennifer Corny, Olivier Bourdon, Claire Dossier, Christophe Delclaux
STUDY OBJECTIVES: Previous case reports of intravenous immunoglobulins (IVIg) in pediatric narcolepsy have shown contradictory results. METHODS: This was a nonrandomized, open-label, controlled, longitudinal observational study of IVIg use in pediatric narcolepsy with retrospective data collection from medical files obtained from a single pediatric national reference center for the treatment of narcolepsy in France. Of 56 consecutively referred patients with narcolepsy, 24 received IVIg (3 infusions administered at 1-mo intervals) in addition to standard care (psychostimulants and/or anticataplectic agents), and 32 continued on standard care alone (controls)...
January 11, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28093690/knowledge-attitudes-and-perceptions-about-routine-childhood-vaccinations-among-jewish-ultra-orthodox-mothers-residing-in-communities-with-low-vaccination-coverage-in-the-jerusalem-district
#9
Chen Stein Zamir, Avi Israeli
Background and aims Childhood vaccinations are an important component of primary prevention. Maternal and Child Health (MCH) clinics in Israel provide routine vaccinations without charge. Several vaccine-preventable-diseases outbreaks (measles, mumps) emerged in Jerusalem in the past decade. We aimed to study attitudes and knowledge on vaccinations among mothers, in communities with low immunization coverage. Methods A qualitative study including focus groups and semi-structured interviews. Results Low immunization coverage was defined below the district's mean (age 2 years, 2013) for measles-mumps-rubella-varicella 1st dose (MMR1\MMRV1) and diphtheria-tetanus-pertussis 4th dose (DTaP4), 96 and 89%, respectively...
January 16, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28091958/identification-and-anticoagulant-activity-of-a-novel-kunitz-type-protein-ha11-from-the-salivary-gland-of-the-tick-hyalomma-asiaticum
#10
Houshuang Zhang, Ruiqiong Qiao, Haiyan Gong, Jie Cao, Yongzhi Zhou, Jinlin Zhou
Kunitz/bovine pancreatic trypsin inhibitor proteins are abundant in the salivary glands of ticks and perform multiple functions in blood feeding, including inhibiting blood coagulation, regulating host blood supply and disrupting host angiogenesis. In this study, we identified a novel gene designated HA11 (Hyalomma asiaticum 11 kDa protein) from the salivary gland of the tick H. asiaticum. HA11 is encoded by a gene with an open reading frame of 306 bp that is translated into a deduced 101 amino acid 11 kDa protein that shares 27% sequence identity with a Kunitz-like protease inhibitor precursor in Amblyomma variegatum...
January 13, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28091576/adjuvant-and-carrier-protein-dependent-t-cell-priming-promotes-a-robust-antibody-response-against-the-plasmodium-falciparum-pfs25-vaccine-candidate
#11
Andrea J Radtke, Charles F Anderson, Nicolas Riteau, Kelly Rausch, Puthupparampil Scaria, Emily R Kelnhofer, Randall F Howard, Alan Sher, Ronald N Germain, Patrick Duffy
Humoral immune responses have the potential to maintain protective antibody levels for years due to the immunoglobulin-secreting activity of long-lived plasma cells (LLPCs). However, many subunit vaccines under development fail to generate robust LLPC responses, and therefore a variety of strategies are being employed to overcome this limitation, including conjugation to carrier proteins and/or formulation with potent adjuvants. Pfs25, an antigen expressed on malaria zygotes and ookinetes, is a leading transmission blocking vaccine (TBV) candidate for Plasmodium falciparum...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28088686/immune-history-and-influenza-virus-susceptibility
#12
REVIEW
Sarah Cobey, Scott E Hensley
Antibody responses to influenza viruses are critical for protection, but the ways in which repeated viral exposures shape antibody evolution and effectiveness over time remain controversial. Early observations demonstrated that viral exposure history has a profound effect on the specificity and magnitude of antibody responses to a new viral strain, a phenomenon called 'original antigenic sin.' Although 'sin' might suppress some aspects of the immune response, so far there is little indication that hosts with pre-existing immunity are more susceptible to viral infections compared to naïve hosts...
January 12, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28087302/the-long-term-effect-of-bacille-calmette-gu%C3%A3-rin-vaccination-on-tuberculin-skin-testing-a-55-year-follow-up-study
#13
James D Mancuso, Rupal M Mody, Cara H Olsen, Lee H Harrison, Mathuram Santosham, Naomi E Aronson
BACKGROUND: Bacille Calmette-Guérin vaccination (BCG) is known to cause false positive tuberculin skin test (TST) results from cross-reactions to mycobacterial antigens. However, the duration of BCG influence on the TST is poorly characterized. The objective of the study was to assess the long-term effect of BCG vaccination on TST reactivity. METHODS: Data on TST reactivity were prospectively collected during 1935-47 as part of a clinical trial among American Indians / Alaskan Natives and retrospectively thereafter between 1948 and 1998...
January 10, 2017: Chest
https://www.readbyqxmd.com/read/28087147/immune-responses-to-in-ovo-vaccine-formulations-containing-inactivated-fowl-adenovirus-8b-with-poly-di-sodium-carboxylatoethylphenoxy-phosphazene-pcep-and-avian-beta-defensin-as-adjuvants-in-chickens
#14
Mishal Sarfraz, Muhammed Suleman, Suresh K Tikoo, Colette Wheler, Andrew A Potter, Volker Gerdts, Arshud Dar
Inclusion body hepatitis (IBH) is one of the major viral infections causing substantial economic loss to the global poultry industry. The disease is characterized by a sudden onset of mortality (2-30%) and high morbidity (60-70%). IBH is caused by a number of serotypes of fowl adenovirus with substantially low levels of serotype cross protection. Thus far, there is no effective and safe vaccine commercially available in the North America for the control of IBH in chickens. Poly[di(sodium carboxylatoethylphenoxy)]phosphazene (PCEP) is a high molecular weight, biodegradable water soluble polymer that has been well characterized as a safe and effective adjuvant for a number of experimental veterinary vaccines...
January 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28086991/does-waterfall-aerosol-influence-mucosal-immunity-and-chronic-stress-a-randomized-controlled-clinical-trial
#15
Carina Grafetstätter, Martin Gaisberger, Johanna Prossegger, Markus Ritter, Predrag Kolarž, Christina Pichler, Josef Thalhamer, Arnulf Hartl
BACKGROUND: The specific microclimate of alpine waterfalls with high levels of ionized water aerosols has been suggested to trigger beneficial immunological and psychological effects. In the present three-armed randomized controlled clinical study, we focused on effects on (i) immunological reagibility, on (ii) physiological stress responses, and on (iii) stress-related psychological parameters. METHODS: People with moderate to high stress levels (n = 65) spent an active sojourn with daily hiking tours in the National Park Hohe Tauern (Großkirchheim, Austria)...
January 13, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28081253/probability-of-transmission-of-malaria-from-mosquito-to-human-is-regulated-by-mosquito-parasite-density-in-na%C3%A3-ve-and-vaccinated-hosts
#16
Thomas S Churcher, Robert E Sinden, Nick J Edwards, Ian D Poulton, Thomas W Rampling, Patrick M Brock, Jamie T Griffin, Leanna M Upton, Sara E Zakutansky, Katarzyna A Sala, Fiona Angrisano, Adrian V S Hill, Andrew M Blagborough
Over a century since Ronald Ross discovered that malaria is caused by the bite of an infectious mosquito it is still unclear how the number of parasites injected influences disease transmission. Currently it is assumed that all mosquitoes with salivary gland sporozoites are equally infectious irrespective of the number of parasites they harbour, though this has never been rigorously tested. Here we analyse >1000 experimental infections of humans and mice and demonstrate a dose-dependency for probability of infection and the length of the host pre-patent period...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28079621/effects-of-education-and-information-on-vaccination-behavior-in-patients-with-inflammatory-bowel-disease
#17
Sofie Coenen, Ellen Weyts, Cedric Jorissen, Paul De Munter, Maja Noman, Vera Ballet, Séverine Vermeire, Gert Van Assche, Marc Ferrante
BACKGROUND: Despite the existence of international guidelines, vaccination in patients with inflammatory bowel disease (IBD) has not been integrated optimally. We developed a thorough education program, and compared its influence on vaccination rates with routine clinical practice in a tertiary IBD center. METHODS: Between December 2014 and March 2015, we included 505 consecutive patients with IBD visiting our outpatient clinic (53% men, 72% Crohn's disease, median age 44 years)...
February 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28077630/mavs-is-essential-for-primary-cd4-t-cell-immunity-but-not-for-recall-t-cell-responses-following-an-attenuated-west-nile-virus-infection
#18
Huanle Luo, Evandro Winkelmann, Guorui Xie, Rong Fang, Bi-Hung Peng, Li Li, Helen M Lazear, Slobodan Paessler, Michael S Diamond, Michael Gale, Alan D Barrett, Tian Wang
: The use of pathogen recognition receptor (PRR) agonists and the molecular mechanisms involved have been the major focus of research in individual vaccine development. West Nile virus (WNV) nonstructural (NS) 4B-P38G mutant has several features for an ideal vaccine candidate, including significantly reduced neuroinvasiveness, induction of strong adaptive immunity, and protection of mice from wild-type (WT) WNV infection. Here, we determined the role of mitochondrial antiviral-signaling (MAVS), the adaptor protein for RIG-I like receptor in regulating host immunity against the NS4B-P38G vaccine...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28075229/altered-mitochondrial-dynamics-as-a-consequence-of-venezuelan-equine-encephalitis-virus-infection
#19
Forrest Keck, Taryn Brooks-Faulconer, Tyler Lark, Pavitra Ravishankar, Charles Bailey, Carolina Salvador-Morales, Aarthi Narayanan
Mitochondria are sentinel organelles that are impacted by various forms of cellular stress, including viral infections. While signaling events associated with mitochondria, including those activated by pathogen associated molecular patterns (PAMPs), are widely studied, alterations in mitochondrial distribution and changes in mitochondrial dynamics are also beginning to be associated with cellular insult. Cells of neuronal origin have been demonstrated to display remarkable alterations in several instances, including neurodegenerative disorders...
January 11, 2017: Virulence
https://www.readbyqxmd.com/read/28069075/domestic-trends-in-malaria-research-and-development-in-china-and-its-global-influence
#20
Yang-Mu Huang, Lu-Wen Shi, Rui She, Jing Bai, Shi-Yong Jiao, Yan Guo
BACKGROUND: Though many countries, including China, are moving towards malaria elimination, malaria remains a major global health threat. Due to the spread of antimalarial drug resistance and the need for innovative medical products during the elimination phase, further research and development (R&D) of innovative tools in both epidemic and elimination areas is needed. This study aims to identify the trends and gaps in malaria R&D in China, and aims to offer suggestions on how China can be more effectively involved in global malaria R&D...
January 10, 2017: Infectious Diseases of Poverty
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