Articles tagged with Vaccination
A new analysis suggests that the pace of vaccination should directly dictate the lifting of COVID-19 restrictions to boost freedoms and minimize new waves of infection. The study's findings suggest that further severe waves can be avoided if restrictions are lifted no faster than the pace dictated by vaccination progress.
A study of highly vaccinated health workers found that COVID-19 vaccines lost effectiveness in protecting against symptomatic infection by July, with only 65% protection remaining. The emergence of the delta variant and lifting of masking mandates contributed to this decline in vaccine efficacy.
Researchers compared antibody responses in adults receiving Pfizer/BioNTech and Moderna COVID-19 vaccines. The study found differences in antibody responses among young and older adults. Younger recipients showed higher antibody levels after vaccination.
A study found that people who feel their sense of autonomy is unmet by government incentives like vaccine passports are less likely to take the COVID-19 vaccine. The research highlights that public health incentives might affect people's vaccination decisions in unintended ways, potentially undermining herd immunity.
Researchers found that prior exposure to common cold coronaviruses boosts the body's immune response to SARS-CoV-2, with cross-reactive T cells recognized by the immune system. The study's findings suggest a protective effect against severe disease and improved vaccine efficacy in younger individuals.
A study based on US blood donations found increasing seroprevalence of SARS-CoV-2 antibodies over time, with variations by age, race, and geographic region. Seroprevalence estimates the prevalence of SARS-CoV-2-specific antibodies due to natural infection or vaccination.
Two studies found that breathing humid and salt-enriched air reduced respiratory droplet generation by approximately 50% within 10 minutes. The study suggests this mechanism may contribute to the effectiveness of cotton face masks in reducing COVID-19 incidence and death.
A study found that exposure to SARS-CoV-2-positive household members increased the risk of COVID-19 infection among vaccinated healthcare workers. Household exposure was associated with a higher infectious dose and contagiousness compared to casual or work-related exposure.
A large-scale UK study confirms that COVID-19 vaccines are effective in reducing severe illness and hospitalisation. The study found that people who received one or two vaccine doses had lower odds of severe disease or hospitalisation than unvaccinated individuals, with a significant reduction in long COVID cases.
A study of over 1,000 patients in Philadelphia's emergency departments found that vaccine hesitancy is common among this population, driven by concerns about safety and research. The authors suggest that EDs can play a valuable role in addressing vaccine hesitancy through targeted education and outreach efforts.
A study assessing Pfizer-BioNTech vaccine safety in highly allergic individuals found a lower incidence of severe adverse reactions compared to previously reported rates. The results suggest the vaccine may be a viable option for these high-risk groups.
Research from Drexel University's Autism Institute identifies higher odds of living in residential facilities, receiving outside caregiver services, and having high-risk health conditions among autistic adults, as well as those with intellectual disability and mental health diagnoses. These groups are more likely to contract COVID-19 a...
A survey of 11,000 health care workers found significant racial and ethnic disparities in COVID-19 vaccine hesitancy, with Black workers experiencing a nearly 5-fold increase compared to white workers.
Researchers at Washington University School of Medicine found that COVID-19 vaccination elicited a response in nearly nine out of ten people with weakened immune systems. However, the responses were only about one-third as strong as those mounted by healthy people. Despite this, the discovery is encouraging news for a population at hig...
A pan-Canadian randomized controlled trial is using digital communication to target common reasons for vaccine hesitancy, including age, language, and education level. Family physicians will receive tailored information to share with patients through email and text message, aiming to improve vaccine uptake.
A small study of 27 children aged 12-15 with neurological conditions found the Pfizer jab's side effects were mild to moderate and cleared up within a week. The vaccination was taken by parents who believed their children were at high risk of COVID-19 disease, highlighting its benefits in vulnerable groups.
A large-scale analysis of Israel's COVID-19 vaccination data found that the Pfizer/BioNTech BNT162B2 vaccine is very safe, with only a few potential side effects. The study also revealed that coronavirus infection poses a much higher risk of serious adverse events compared to vaccination.
The International Vaccine Institute (IVI) has initiated a Phase II/III clinical trial for the Bharat Biotech Chikungunya vaccine candidate BBV87, evaluating its safety and immunogenicity in healthy adults across five countries. The study aims to develop an affordable vaccine with the aim of achieving WHO prequalification.
A US study published in Journal of Health Communication found that emphasizing individual health risks from COVID-19 leads to higher vaccine acceptance among participants. The researchers also discovered that loss framing was slightly more effective than positive gain framing, suggesting cultural and personal factors may play a role.
A survey of mostly African American adults found that vaccine hesitancy was greatest among those aged 18-29, with COVID-related housing insecurity increasing the odds by sevenfold. Younger individuals and those experiencing housing insecurity were more likely to be resistant to vaccination.
A review of expert opinions reveals mixed results for the EU's COVID-19 response, with successes including coordinated vaccine procurement but shortcomings including inconsistent national responses. Experts emphasize the need for strengthened local surveillance systems and improved EU leadership to prevent similar crises.
A new approach has identified T cells in Covid-19 patients, revealing their appearance, number, and activity level against SARS-CoV-2. The study distinguishes between active and dormant T cells, enabling a better understanding of the immune response to the virus.
Experts recommend universities take five steps to minimize COVID-19 risks: on-site vaccinations, delayed re-openings, improved ventilation, effective contact tracing and mask mandates. These measures aim to protect students and staff from the Delta variant and prevent outbreaks.
The early US COVID-19 vaccination campaign prevented nearly 140,000 deaths and 3 million cases of COVID-19. The average state saw a reduction of five fewer deaths from COVID-19 per 10,000 adult residents.
Researchers investigated short-term COVID-19 vaccine reactions in pregnant and lactating individuals compared to those planning pregnancy. The study found that vaccinated pregnant and lactating women experienced fewer severe adverse events than unvaccinated women.
Researchers at Massachusetts General Hospital found that NFL and NCAA games held with limited in-person attendance did not cause an increase in COVID-19 cases. The study suggests that measures such as strict mask use and open air helped prevent the spread of COVID-19 during these events.
A Princeton University and McGill University study found that vaccine nationalism can increase COVID-19 cases and facilitate the emergence of novel variants. Increased vaccine-sharing resulted in reduced case numbers in low-access regions, highlighting the importance of equitable global distribution.
A study found that mRNA vaccine recipients with prior SARS-CoV-2 infection experienced more severe symptoms after vaccination. The study suggests vaccine type may influence symptom severity in individuals with a history of COVID-19 infection.
A CDC mask guidance update in May 2021 ignored realities that left vulnerable communities exposed to increased transmission of COVID-19. The guidance relied on the honor system to ensure unvaccinated individuals wore masks, but experts say this approach was flawed due to lack of verification methods.
A new research strategy enhances COVID-19 vaccine effectiveness by providing 'border protection' immunity in the nose, mouth and blood. The approach involves suppressing an enzyme that breaks down both pathogens and immune cells, resulting in a robust antibody response and improved protection against infections.
Researchers investigated SARS-CoV-2 BNT162b2 mRNA vaccine response in cancer patients and healthy controls. The study found that the vaccine's antispike IgG antibody response wanes over time in patients on active anticancer treatment.
This observational study evaluates the concentration of SARS-CoV-2 antibodies in breast milk of lactating women who received mRNA vaccines. The findings suggest a correlation between serum antibody levels and breast milk antibody concentrations.
A South Australian-developed SARS-CoV-19 vaccine has shown promising results in early animal testing, confirming its safety and effectiveness in preventing COVID-19 lung infection. The vaccine, named COVAX-19, incorporates an adjuvant derived from a plant sugar called inulin.
Researchers investigated myocarditis cases in adolescents after Pfizer-BioNTech COVID-19 vaccination and found a significant association. The study used comprehensive cardiac imaging and reviewed the results, highlighting the potential risk of myocarditis in this population.
SK bioscience's GBP510 vaccine candidate has shown promising safety and immunogenic response in Phase I/II clinical trials. IVI will partner with SK on global Phase III trials to accelerate development and WHO approval of the vaccine.
A study found that vaccination alone cannot stop the pandemic in some scenarios, and non-pharmaceutical interventions (NPIs) are necessary to complement vaccination. The model predicts that the pandemic will end between January 20, 2022, and October 19, 2024, assuming immunity persists for 180 days to 365 days.
Researchers found that a second dose of the Pfizer vaccine, especially in those with previous SARS-CoV-2 infection, dramatically increased virus variant neutralising antibody responses. This additional boost increases potential protection against existing and future variants of concern.
The study suggests that COVID-19 eradication is technically possible due to the availability of safe vaccines, lifelong immunity, and effective government management. However, securing high vaccine coverage and responding quickly to variants are major challenges.
Researchers at Massachusetts General Hospital found that crowding in prisons significantly increases the risk of COVID-19 infections among inmates. The study suggests that policy changes are necessary to protect this vulnerable population and notes that even a small increase in crowding can pose a significant threat.
Researchers evaluated antibody levels after Pfizer/BioNTech vaccine in previously infected and uninfected individuals, finding a significant increase in SARS-CoV-2 spike immunoglobin G antibodies. The study suggests the vaccine effectively boosts immunity in those who have already been infected.
A recent study published in Transplant Infectious Disease found that COVID-19 vaccination provides strong protection against the virus for solid organ transplant recipients, with an almost 80% reduction in symptomatic cases. The study examined data from over 2,150 transplant patients and showed that nearly 70% of vaccinated patients re...
A new model incorporates human behavior and fears to predict multiple waves of COVID-19 infections. The 'Triple Contagion' model shows how fear can drive disease resurgence, as people may abandon protective measures prematurely or avoid vaccines due to misinformation.
Researchers found two new TLR7 gene variants in young, healthy men with severe Covid-19, highlighting the importance of genetic screenings for early intervention. These variants were associated with impaired immune response and increased risk of serious illness, emphasizing the need for preventive vaccination strategies.
A new model developed by NYU Tandon School of Engineering researchers provides a data-centric approach to reopening towns and can serve as a blueprint for areas with low vaccine rates. The model shows that increasing access to social gatherings and public transportation at a certain rate supports a safe, rapid reopening.
A new Polish study examines why people refuse vaccination, finding that generalized negative attitudes towards vaccines and confirmation bias play a significant role. Vaccine deniers often attribute negative symptoms to vaccines despite missing evidence of correlation.
A survey of US and NYC parents found that only 49% planned to vaccinate their youngest child, with vaccine hesitancy linked to education level and income. The study highlights the need for targeted information campaigns to improve vaccination uptake among young children.
Researchers at Mayo Clinic found that wearing masks and maintaining physical distance significantly reduce the spread of COVID-19. The study showed that both disposable paper medical masks and two-layer cloth masks were effective in blocking aerosol particles, with increased distance reducing particle counts to near baseline levels.
Göttingen researchers have developed mini-antibodies that efficiently block the coronavirus SARS-CoV-2 and its new variants. The nanobodies bind and neutralize the virus with extreme stability, making them promising agents to treat COVID-19.
A study published in Nature Medicine found that combining different COVID-19 vaccines boosts the immune response by up to ten times. The research team discovered that a combination of AstraZeneca and BioNTech vaccines or double doses of BioNTech vaccination yields better results than a double dose of AstraZeneca vaccine.
Researchers at the University of East Anglia warn that relaxing Covid-19 restrictions prematurely could pave the way for new vaccine-resistant virus mutations. The 'arms race' between humans and the virus continues, with rising cases providing opportunities for it to evolve into more transmissible variants.
Researchers evaluated the safety of a second Pfizer-BioNTech or Moderna COVID-19 vaccine dose in patients who experienced an allergic reaction to the first dose. The study found no significant increase in adverse events, suggesting the vaccines are safe for those with prior allergic reactions.
A multi-hospital analysis of patients who experienced allergic reactions to their first mRNA COVID-19 vaccine dose found that all patients who received a second dose tolerated it without complications. The study suggests it's safe for most individuals to receive a second dose, despite initial concerns.
Researchers developed a mechanical theory to determine the critical force required for needle insertion in soft materials like skin, discovering that tissue toughness and needle radius play crucial roles. The model provides quantitative predictions and may impact future technology like self-administered disposable pads with microneedles.
The AZ HEROES study, led by the University of Arizona Health Sciences, has received a $15 million award from the CDC to continue its research on COVID-19 vaccine effectiveness. The study will expand to include children aged 4 months to 17 years and focus on underserved populations.
A study investigated longitudinal serological and vaccination responses to SARS-COV-2 in dental professionals. The results showed that natural infection with SARS-COV-2 leads to persistent, neutralizing and protective serological responses in over 70% of participants.
Researchers found that older people have lower antibody responses against COVID-19 variants, making them more susceptible to infection. Vaccination still appears effective in preventing severe illness, but promoting vaccinations is crucial to protect the community.
The study found that two-dose mRNA vaccines provided 88% protection against the original SARS-CoV-2 virus, 86% against the Alpha variant, and 77% against the Beta variant. Previous SARS-CoV-2 infection also conferred similar protection to mRNA vaccination.
A computerized decision model found that mRNA vaccines (e.g., Pfizer) provide a net gain of 7.4 days in quality-adjusted life expectancy compared to not vaccinating at all, while adenovirus vector vaccines (e.g., J¼hnson ⚠ Johnson) yield virtually equivalent results.
Researchers found that COVID-19 vaccines are more than 95% effective in preventing confirmed infection. The study also revealed significant disparities among different age groups and comorbidities, with higher risks observed among older adults and those with underlying health conditions. Additionally, a separate cohort study showed tha...
A new study reveals the second dose of a COVID-19 vaccine induces powerful immune system responses, including broad antiviral protection and enhanced innate immunity. The research strongly supports skipping the second dose, as it stimulates a manifold increase in antibody levels and a terrific T-cell response.