Articles tagged with Vaccination
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A new oral anthrax vaccine is being developed by Texas A&M researchers to protect livestock and wildlife from the deadly disease. The vaccine, which uses a gel-like suspension of live bacteria, could potentially be distributed through bait to reach animals more easily.
A new experimental COVID-19 vaccine has been shown to prevent pneumonia and elicit high levels of protective antibodies in mice infected with the virus. The vaccine uses a mild virus genetically modified to carry a key gene from the COVID-19 virus, generating a strong immune response.
A new vaccine candidate BCG::RD1 has shown highly protective effects against tuberculosis in older mice with type 2 diabetes. The vaccine acts on multiple immune cell subsets to mount a robust response against TB-causing bacteria.
A new study demonstrates the potential of an intranasal vaccine platform using self-assembling peptide nanofibers tagged with antigens, inducing an immune response and activating T cells without adjuvants. This technology offers a safer and more effective alternative for generating long-lasting immunity against diseases.
Researchers are developing and testing technology for delivering vaccine doses via the skin using microneedles. This innovative approach aims to improve patient compliance and yield better health outcomes, with potential benefits including reduced burden on healthcare systems and increased accessibility for self-administration at home.
A recent study published in Cell Reports Medicine found that the BCG vaccine is safe and does not increase the risk of COVID-19 symptoms. The research also suggests a cautiously positive picture, with lower numbers of sick people and extreme fatigue among vaccinated individuals during the pandemic.
The investigational vaccine induced neutralizing antibodies in mice, providing protection against SARS-CoV-2 infection. Additionally, mice challenged with the virus after a single dose showed protection against viral replication in the lung, indicating potential efficacy in humans.
A study published in Acta Obstetricia et Gynecologica Scandinavica found that HPV vaccination significantly reduces the risk of high-grade cervical intraepithelial neoplasia, a precancerous condition leading to cervical cancer. Vaccination coverage was high among young women born in 1993, resulting in a 30% lower risk compared to those...
A carefully engineered spike protein stabilizer has aided in the development of a new COVID-19 vaccine. The stabilizer, known as S-2P protein, keeps infection from spreading and prompts a helpful immune response.
A study found that countries with mandatory BCG vaccination until 2000 exhibited slower infection and death rates during the initial COVID-19 outbreak. Researchers estimated that only 468 people would have died in the US if mandatory BCG vaccination had been implemented decades earlier.
Researchers created a new mouse model to study viral responses and test COVID-19 vaccines. The model, based on an adapted SARS-CoV-2 strain, showed promise in protecting vaccinated mice from disease.
An experimental COVID-19 vaccine demonstrated robust immune responses and rapid viral control in the upper and lower airways of rhesus macaques. The vaccine reduced replicating virus in the lungs and upper airway, which could limit disease progression and transmission.
Clinical studies in Kenya suggest that iron deficiency during infancy may reduce the protection provided by vaccinations. In one study, researchers found that anaemic infants had more than twice the risk of lacking protective antibodies against diphtheria and other pathogens.
A team of researchers from SMART has developed a novel approach to induce strong and broad immunity against the dengue virus. Sequential immunization was found to be more effective in inducing higher levels of neutralizing antibodies to all four DENV serotypes than traditional tetravalent-formulated immunization.
A comprehensive review of vaccine data over 20 years found vaccines to be remarkably safe, with most safety issues identified through existing postmarketing surveillance programs. The study confirms the effectiveness of the vaccine approval system and postmarketing surveillance in ensuring public health benefits while minimizing risks.
A Phase III vaccine trial will be conducted at UC San Diego, recruiting up to 500 participants to assess the efficacy and immunogenicity of a Moderna-developed vaccine. The trial aims to demonstrate the vaccine's ability to prevent COVID-19 and severe symptoms, with results expected by end of year.
A new mRNA-based vaccine candidate, ARCoV, elicits protective immunity in mice and non-human primates, preventing SARS-CoV-2 infection. The vaccine induces high levels of neutralizing antibodies and T cell responses, offering broad protection against different strains.
Researchers at the University of Texas at Austin have successfully redesigned a key protein from the coronavirus, enabling faster and more stable vaccine production. The new design, called HexaPro, produces up to 10 times more protein than an earlier version, potentially reducing vaccine doses or speeding up production.
Researchers are working on experimental gene-based vaccines using harmless viruses or DNA/RNA to deliver genetic information to human cells. The technology is fast but largely unproven, and concerns remain about neutralization levels and safety. Multiple types of vaccines will likely be needed to ensure effective immunity.
Researchers identified a strong bias towards U residues in SARS-CoV-2 mutations, suggesting a defense mechanism to degrade the virus. Natural selection allows the virus to adapt, but mutational processes may be hindered by human proteins.
Researchers created a hybrid virus that targets cells like SARS-CoV-2 but lacks severe disease genes. The hybrid virus can be handled under ordinary laboratory safety conditions, making it ideal for high-throughput analyses.
A study published in The Lancet Public Health found that nearly 60% of US parents of unvaccinated adolescents have no intention to initiate the HPV vaccine series. Healthcare providers play a crucial role in addressing parental misconceptions and ensuring series completion.
Researchers at the Weizmann Institute of Science created artificial cells that produced viral parts, allowing for safe testing and development of diagnostic tools, drugs, and vaccines. The system consists of micrometer-sized compartments etched into a silicon chip, enabling controlled production of specific proteins.
A new nanoparticle vaccine, repRNA-CoV2S, has shown hints of protection and immunity in preclinical studies with mice and macaques. The vaccine elicited robust immune responses, producing antibodies and antiviral T cell responses, and demonstrated safety and efficacy.
A replicating RNA vaccine has shown robust immune response in both young and old animal models, producing antibodies comparable to those in people recovering from COVID-19. The vaccine's design avoids immune responses that could exacerbate the virus, instead inducing protective antiviral measures and T cells.
A modelling study published in The Lancet Global Health found that continuing routine childhood vaccination programmes in Africa during the pandemic could save around 702,000 child lives from vaccine-preventable diseases. This number far exceeds the potential risks of COVID-19 transmission to older family members.
A novel mouse model shows that contained and persistent yet non-pathogenic Mtb infection reduces tuberculosis disease burden after re-exposure. The study highlights the importance of innate immune responses in protecting against the disease.
Inflammageing, an age-associated phenomenon of increased general inflammation, may inhibit overall immunity and reduce vaccination efficacy in older people. Strategies to mitigate related effects include senolytic drugs or anti-inflammatory therapies.
The Phase 1 trial of mRNA-1273 vaccine showed neutralizing antibody activity in healthy adults, with high levels observed after two doses. The vaccine was generally well-tolerated, with side effects including fatigue and pain at the injection site.
Researchers analyzed nearly 300 human SARS-CoV-2 antibodies and found IGHV3-53 is the most frequently used gene for targeting the virus spike protein. This gene leads to highly potent antibodies with lower mutation rates, making them promising for vaccine design.
A recent article in Nature Reviews Microbiology calls for more research into bats' molecular biology and ecology to predict and prevent the next pandemic. Bats carry a vast number of viruses, with evidence linking different species to human outbreaks of SARS, MERS, Ebola, and other diseases.
Researchers must consider factors like population immunity, social distancing, and baseline immunity when evaluating vaccine efficacy. Adequate sample sizes are needed to demonstrate vaccine effectiveness, which may be influenced by COVID-19 severity in vaccinated individuals.
A recent study analyzing 10 years of HPV-vaccine related Facebook posts reveals that anti-vaxxers have gained a stronger voice against the use of the human papillomavirus vaccine. Negative posts displayed a 45% increase in public engagement, with some showing negative views on vaccine safety and effectiveness.
A recent article by the Society for Disaster Medicine and Public Health emphasizes the importance of understanding herd immunity in the context of COVID-19. The authors argue that traditional definitions of a 'case' are inadequate and propose using daily COVID hospital admissions as a more valid measure of the pandemic's medical impact.
A recent study published by Rensselaer Polytechnic Institute found that people tend to perceive non-round numbers as unique and jarring, leading to a negative evaluation. This effect has implications for public health messaging, economic marketing, and organizational behavior.
Scientists from Japan investigate the mouse norovirus structure and find two alternative capsid structures (type A and type B) that switch depending on aqueous conditions. Type B particles show a delay in propagation and reduced adsorption to host cells, suggesting they may evade the immune system before changing to type A for infection.
UW-Madison researchers have created a safer way to deliver mRNA-based therapy for cancer, liver disorders, and vaccination. Tiny mineral particles (MCMs) with pores on their surface can carry molecules like proteins or messenger RNA, mimicking ancient discoveries in archaeology.
A recent study by Monash University suggests that components within vaccines can play a major role in aiding the lifespan of individual plasma cells. This understanding could lead to the development of more effective vaccines.
A new study published in Neurology found no difference in developmental and behavioral outcomes for children who had febrile seizures after vaccination, compared to those with febrile seizures not associated with vaccination or never having a seizure. This reassuring news supports the safety of vaccines.
A new study found that T cells targeting the SARS-CoV-2 virus can help fight COVID-19, even in severe cases. The research also reveals similar responses to the virus among Dutch and American patients.
A new study estimates Covid-19 herd immunity level can be reduced to 43% by incorporating age and social activity into a mathematical model, potentially informing pandemic policy decisions
A phase I/II clinical trial suggests that vaccines prepared from a patient's own tumor cells may prevent mantle cell lymphoma from returning after treatment. The vaccines are a safe and effective way to induce the immune system to attack any tumor cells that could cause disease relapse.
Researchers at UConn's CEVR have made a breakthrough in vaccine development for Mycoplasma pneumoniae, a common and difficult-to-treat pneumonia-causing pathogen. By identifying the cause of vaccine-enhanced disease (VED), they were able to develop a new vaccine formulation that eliminates safety concerns.
A recent survey from CUNY SPH found that New Yorkers who understand how vaccines work are more likely to accept a COVID-19 vaccine. The study also revealed significant disparities in vaccine acceptance rates among different age groups, educational levels, and racial/ethnic backgrounds.
Researchers discovered that vaccinated participants were less generous to non-vaccinated individuals than to other vaccinated peers, especially among those who viewed vaccination as a moral duty. This suggests that vaccination is perceived as a societal obligation, transcending social group affiliations.
A study by universities of Bonn and Nijmegen found that BCG vaccination enhances immune response to multiple infections, including TB and Covid-19. The vaccine's effect is attributed to trained immunity, which allows innate immune cells to become more efficient independently of reinfection.
A multilevel intervention program improved HPV vaccination series initiation and completion rates among adolescent patients. The program educated pediatric and family medicine providers about the importance of HPV vaccines, along with healthcare system changes that started the HPV vaccine series before age 11.
Researchers developed a COVID-19 mouse model that replicates the illness in people, allowing for accelerated testing of experimental treatments and vaccines. The model can also study risk factors for severe illness, such as obesity and advanced age.
The EPIC atlas provides a comprehensive immune cell database to study the mechanisms of immunity and develop more effective treatments. It enables researchers to stratify and analyze data sets using artificial intelligence, accelerating vaccine development and identifying new therapeutic targets.
Early human challenge trials of SARS-CoV-2 vaccines may be the correct test of ethics, meeting equitable distribution principles. An international governance system is proposed to oversee access to Covid-19 vaccines and treatments.
A study from Bar-Ilan University has identified immunodominant epitopes from the SARS-CoV-2 proteome, capable of generating both antibody- and cell-mediated immune responses. The seven identified epitopes are present in over 87% of the worldwide virus-affected population and represent potentially effective vaccine candidates.
Researchers at Westmead Institute for Medical Research identified a unique subset of human cells involved in the immune response against hepatitis B. The discovery could lead to new treatments and improved vaccines for HBV infection.
Researchers have identified four SARS-CoV-2 spike protein antigens that neutralized up to 98% of the virus after two vaccinations, with the RBD antigen showing the most promise for high-affinity antibody production
Scientists have developed a technique to encase protein molecules in a silica shell, preserving vaccine effectiveness even at high temperatures. This technology, known as ensilication, has been proven effective in real-world trials, demonstrating its potential to eradicate vaccine-preventable diseases in low-income countries.
A Washington State University study found that words matter in vaccination messages, with normative and injunctive messages increasing interest and vaccine intention. Negatively worded messages can decrease interest, highlighting the importance of using effective promotional messaging to improve vaccine uptake.
New articles in the Hastings Center report explore the ethics of COVID-19 vaccine distribution, with a focus on social justice and historical disadvantage. The articles discuss the allocation of scarce resources, safety concerns for healthcare workers, and the impact on marginalized communities.
A Texas A&M team is developing a microfluidic device called PRESCIENT to rapidly identify antibodies that can neutralize SARS-CoV-2 infection. The device has been successfully tested with the hepatitis virus and can conduct hundreds of tests per second.
A new web resource has been created to provide scientists with easy access to the latest SARS-CoV-2 protein structures, ensuring the highest accuracy possible for treatments and vaccines. The tool, developed by an international team of experts, also includes assessments of model quality and enhanced versions when available.
A recent study found that delayed vaccinations and increased contact among young children, likely through 'measles parties', fueled the 2019 measles outbreak in NYC. Vaccination campaigns averted a huge spike in cases, but experts warn of potential future outbreaks as vaccination rates plummet.
Researchers have created a high-performance cancer vaccine utilizing self-healing polylactic acid microcapsules, which efficiently activate the immune system and inhibit tumor growth. The vaccine achieves effective T cell response, potent tumor inhibition, and anti-metastatic effects in various tumor models.