Articles tagged with Sars Cov 2
A new study found that vaccinated SARS survivors can produce antibodies capable of neutralizing not only current but also future coronavirus threats. The breakthrough could lead to the development of an effective, broad-spectrum vaccine against different coronaviruses.
Researchers studied electrical conduction through membranes during Controlled Breakdown, a technique to fabricate single nanopores. They found that redox reactions occur at the membrane-electrolyte interface, allowing localization of pore formation using metal microelectrodes.
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.
A new study by University of Waterloo researchers highlights the importance of using better face masks and proper ventilation to mitigate COVID-19 transmission indoors. The study found that higher-quality masks can filter up to 50% of exhaled aerosol droplets, while even modest ventilation rates are effective in reducing risk.
During the COVID-19 pandemic, U.S. alcohol retail store sales increased compared to usual trends, indicating a rise in home drinking and potential higher alcohol consumption. The study found that beer, wine, and liquor store sales increased by 17%, while food services and drinking places sales decreased markedly.
A new study by Ivan Zanoni at Boston Children's Hospital reveals a complex picture of interferon production in mild versus severe COVID-19. The researchers found that different types of interferons have opposite roles in the upper and lower respiratory tract, and that specific interferons determine disease severity.
The SARS-CoV-2 Delta variant has rapidly spread across the globe, infecting over 130 countries. It has higher transmissibility than ancestral strains, posing a risk to unvaccinated populations. Currently authorized vaccines remain effective against symptomatic infections and hospitalizations due to the Delta variant.
A multidisciplinary team reveals two structural points in the Spike protein of SARS-CoV-2 that allow the virus to deceive the immune system. These mutations can be detected and inform strategies to control the pandemic.
A NIH study published in The New England Journal of Medicine found that administering convalescent plasma to outpatients with early symptoms of COVID-19 did not prevent disease progression. The trial, which enrolled over 500 participants, showed a significant reduction of less than 2% in disease progression.
Researchers at Washington University School of Medicine found that COVID-19 vaccination antibodies are effective against the delta variant. The study analyzed antibodies generated by people in response to the Pfizer vaccine and found that 12 out of 13 antibodies recognized both alpha and delta variants, while one antibody failed to rec...
The NIH study reveals that aerosol exposure directly deposits SARS-CoV-2 deep into the lungs, while fomite exposure leads to initial virus replication in the nose. The findings support public health guidance focused on masking, air filtration, social distancing, and handwashing.
A study of 6,280 households found that younger children are more likely to transmit SARS-CoV-2 to caregivers and siblings. The study suggests that household transmission is a significant concern for pediatric patients.
A large-scale population-based study confirms that COVID-19 vaccines far outweigh the risk of Bell's palsy. The study found a small increased risk of Bell's palsy associated with CoronaVac vaccination, but not with BNT162b2.
Researchers at Berkeley Lab have made significant breakthroughs in developing a highly effective COVID-19 antibody therapy and an efficient thermoelectric system that can convert waste heat to electricity. The new antibody, S309, has been shown to neutralize all known SARS-CoV-2 strains and may be more difficult for new mutants to escape.
Researchers at Max Planck Institute elucidated the molecular mechanism of Molnupiravir, an antiviral agent that reduces Sars-CoV-2 coronavirus transmission. By incorporating RNA-like building blocks into the virus genome, Molnupiravir prevents further replication and transmission.
Researchers found that college students with low viral loads can still transmit the virus, and Ct values are not a reliable predictor of transmissibility. The study suggests that symptomatic individuals tend to have higher viral loads or maintain their viral loads for longer periods.
A large-scale surveillance study in Madurai, India, found that comorbidities are a significant predictor of positive RT-PCR testing. The study also revealed an equal risk of asymptomatic infection among children, teenagers, and working-age adults, highlighting the importance of non-communicable disease control in COVID-19 containment s...
Researchers at UNC Chapel Hill found that first-year college students reported decreased alcohol use and binge drinking during the pandemic. Social factors such as social distancing and reduced social support were associated with these decreases, while stress-related factors played a lesser role for most students.
Researchers at the National Eye Institute developed a new sample preparation method to detect SARS-Cov-2, simplifying purification and potentially reducing test time and cost. The method uses a chelating agent to preserve RNA in samples, allowing for direct detection and increasing sensitivity.
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.
Researchers assessed effectiveness of T-cell immune response to 11 SARS-CoV-2 variants, identifying HLA gene variants with significantly changed virus peptides. The T-cell COVID-19 Atlas portal (T-CoV) provides a comprehensive resource for understanding the impact of viral mutations on immunity.
Research finds that immunocompromised dialysis patients who received the Pfizer-BioNTech mRNA vaccine have higher levels of neutralising antibodies against SARS-CoV-2 variants, including Delta. A third dose of an mRNA vaccine is recommended to protect this vulnerable group.
Scientists have repurposed CRISPR to identify antibodies in patient blood samples, demonstrating a new class of medical diagnostics. The technique uses customizable proteins attached to Cas9, which assemble on a microchip to bind to specific DNA sequences, allowing for fast and accurate detection.
Researchers discover a new way for an antiviral enzyme to detect and destroy viruses that hide inside cell membranes. The OAS1 p46 isoform enhances the immune response against SARS-CoV-2, flaviviruses, and other RNA viruses.
Two studies report substantial reductions in COVID-19 infections and deaths among vaccinated organ transplant patients, with a lower risk of breakthrough infections compared to the general population. Vaccination is considered critically important for this high-risk group.
A new study reveals that four miRNAs can effectively inhibit SARS-CoV-2 replication, with lower levels in elderly and diabetic individuals. Exercise boosts the level of these miRNAs, providing better protection against COVID-19.
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 new study found that fine aerosols generated during talking and singing can contain more viral particles than coarse aerosols, highlighting the importance of reducing exposure to these particles in indoor environments. The research suggests that these aerosols may play a significant role in SARS-CoV-2 transmission.
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.
Wastewater screening at UC San Diego detects 85% of COVID-19 cases early, enabling timely testing, contact tracing, and isolation. The approach has reduced campus positivity rates to less than 1% during the pandemic.
A new MIT study highlights the importance of careful classroom ventilation in reducing the spread of Covid-19 aerosols. Researchers found that certain configurations, such as closed windows and limited upward air movement, can lead to higher concentrations of potentially problematic aerosols.
Researchers identified genes and cell types involved in rare inflammatory disease MIS-C in children following COVID-19 infection. The study found that specific immune cells are downregulated and associated with a sustained inflammatory response.
Researchers used a hamster model to study COVID-19 lung damage, discovering that the immune system's response plays a crucial role in disease progression. They found that certain cells involved in lung immunity ingest the virus, triggering an inflammatory response that can be brought under control by T cells.
Researchers developed a protein-based COVID-19 vaccine that mimics the SARS-CoV-2 virus shape, eliciting both antibody and T cell responses. The vaccine, using polymersomes decorated with multiple copies of the receptor binding domain antigen, shows promise for longer-lasting immunity.
Research found that COVID-19 patients with more severe symptoms scored lower on reasoning and problem-solving tasks. Cognitive deficits were greatest in those receiving mechanical ventilation, similar to average decline seen over a decade of ageing.
A new system developed at Stanford University and SLAC National Accelerator Laboratory determines the 3D structures of RNA-only molecules with high resolution, applying it to a ribozyme from pond scum and a piece of viral RNA from SARS-CoV-2. The study reveals tiny pockets in the viral RNA that could be targeted for COVID-19 treatments.
Researchers identified two lectins, Clec4g and CD209c, that strongly bind to the SARS-CoV-2 Spike protein, blocking viral entry into cells. These findings hold promise for developing robust therapeutic interventions against circulating variants.
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.
The NIH has launched a pilot study to assess the antibody response of kidney transplant recipients to a third dose of an mRNA COVID-19 vaccine. The trial aims to determine if a third dose can overcome the immune suppression caused by lifelong immunosuppressive therapy in this population.
A new genosensor, developed by a Brazilian research team, can detect the genetic sequence of SARS-CoV-2 in saliva or other body fluids with high sensitivity. The device can analyze samples in 30 minutes for a cost of less than $1 per genosensor.
A new platform can quickly identify common mutations on the SARS-CoV-2 virus, allowing for the development of stronger COVID-19 boosters and universal vaccines. The tool uses genetically modified baker's yeast to map resulting mutations that form and escape neutralizing antibodies.
Researchers found shared clones of antibody-producing white blood cells among COVID-19 survivors and vaccinated individuals, targeting the viral surface 'spike' protein. This discovery could help design more effective vaccines and therapies against emerging variants.
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.
Dr. Christopher Basler received two NIH grants totaling $816,534 to study Middle East respiratory syndrome (MERS) coronavirus and SARS-CoV-2. The research aims to understand how these viruses interact with the body's immune response and identify potential new strategies for treating infection.
A global study of over 96,000 patients found that those who isolated before surgery were at a higher risk of developing post-operative lung complications. Despite this, the study suggests that removing pre-operative isolation strategies may not lead to worse outcomes for patients.
A recent study found SARS-CoV-2 infection among maternal-infant pairs to be extremely rare in early infancy. The findings suggest that while transmission is uncommon, continued monitoring and vaccination efforts are necessary to protect newborns from COVID-19 and its variants.
A global study found that people use music as a coping mechanism for emotional and social stress, with music listening helping to regulate depression and fear. Music making also provides a sense of community and self-reflection, while 'coronamusic' reveals the power of collective creative responses during times of crisis.
The Minimally Instrumented SHERLOCK (miSHERLOCK) test uses CRISPR-based technology to detect multiple COVID-19 variants in saliva samples, providing faster and more accurate diagnoses. The low-cost device, costing $6 per assay, can be assembled using a 3D printer and provides results within one hour.
A new tabletop diagnostic device can detect COVID-19 from saliva samples in about an hour, with accuracy comparable to PCR tests. The device uses CRISPR technology and can be programmed to detect specific variants of the SARS-CoV-2 virus.
A study found that SARS-CoV-2 antibodies remained stable or increased in healthcare workers seven months after infection, indicating potential protection from pre-existing antibodies against common cold coronaviruses. The results suggest that individuals with higher levels of anti-HCoV IgG and IgA had lower susceptibility to COVID-19.
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.
Researchers have discovered that reduced levels of sphingosine are significantly associated with developing COVID-19 symptoms, while elevated sphingosine and acid ceramidase levels are linked to asymptomatic infections. This biomarker has a high degree of accuracy in predicting patient outcomes.
Researchers at UC Berkeley created a rapid COVID-19 diagnostic test utilizing tandem CRISPR nucleases, which accelerates RNA detection and reduces sample handling. This innovation simplifies the assay process, making it faster and more efficient for SARS-CoV-2 virus detection.
A team of scientists at the University of Cambridge has developed a lab-grown model of heart cells that mimic the behavior of real heart cells and are vulnerable to SARS-CoV-2 infection. The researchers showed that an experimental peptide drug, DX600, can prevent the virus from entering the heart cells and reduce levels of infection.
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.
New research found that using electric drills instead of air-driven drills reduces aerosol spray by 99.98%, creating a safer environment for patients and dental teams. This could lead to a significant increase in treatments carried out, addressing the growing backlog of patients waiting for dental care.
The study reveals that lysine residues in the RNA polymerase act as a 'bucket brigade', transporting drugs and nucleotides to the binding site through electrostatic interactions. Favipiravir is found to be taken up more efficiently than ATP, while remdesivir outperforms favipiravir.
Researchers discover presumed SARS-CoV-2 viral particles in the human retina of COVID-19 patients. The finding suggests a possible link between the virus and ocular clinical manifestations, highlighting the need for further investigation into the virus's effects on the eyes.
Researchers found that viruses on coins and banknotes are unlikely to be transmitted through contact. The shelf life of Sars-Cov-2 on these surfaces is short, with the risk of transmission being very low under realistic conditions.
A significant minority of people in Kentucky's indoor public areas fail to wear masks correctly during the pandemic. The study found higher compliance rates in larger stores and affluent city districts. Men aged 40-60 are most likely to be unmasked or incorrectly masked.