Articles tagged with Sars Cov 2
Weekly saliva polymerase chain reaction testing in asymptomatic staff and students in an urban public school district significantly increased SARS-CoV-2 case detection, surpassing county-level infection rates. This study highlights the effectiveness of targeted screening strategies in reducing COVID-19 transmission.
Researchers at the Rosalind Franklin Institute have developed nanobodies from llama antibodies that can effectively target SARS-CoV-2 virus. These nanobodies were able to significantly reduce signs of COVID-19 disease in infected animal models and show promise as a new treatment option.
A study published in Nature Communications reveals the mechanisms of SARS-CoV-2 proteolysis and identifies key cellular substrates with therapeutic potential. The research provides a powerful resource for developing targeted strategies to inhibit the virus, which has caused over 227 million infections and 4.6 million deaths worldwide.
Researchers identified four immune markers that are elevated in SARS-CoV-2 patients in the early phase of infection but not in other viral infections. These findings could provide starting points for future therapeutic approaches and serve as comparative parameters for further studies on chronic COVID-19 forms.
Researchers at the University of São Paulo found that a hypertonic saline solution can inhibit SARS-CoV-2 replication by up to 88% in human epithelial lung cells. The study suggests that the use of such a solution could contribute to the development of novel prophylactic interventions or treatments for COVID-19.
Patients with cancer show strong immune response to COVID-19 vaccination without increased side effects. A third booster dose may further increase protection.
A study analyzed SARS-CoV-2 vaccination distribution in Massachusetts, finding lower vaccine coverage and infection risk in communities with increased socioeconomic vulnerability. The analysis also revealed larger proportions of Black and Latinx individuals in these areas, highlighting disparities in COVID-19 vaccination access.
Researchers designed novel molecules that bound tightly to SARS-CoV-2's molecular scissors, inhibiting the virus's replication. The breakthrough could lead to new treatments for COVID-19.
A new study found that people infected with COVID-19 exhale infectious virus in their breath, putting others at risk. Using tight-fitting masks can reduce the amount of virus in the air by half.
A recent review of international studies found that persistent symptoms after COVID-19 infection were most common among children with pre-existing health conditions. However, symptoms rarely lasted beyond 12 weeks in young people, suggesting long COVID may be less concerning than in adults.
A study found that elevated mucosal-associated invariant T (MAIT) cell activation is strongly correlated with poor immune coordination and increased mortality in severe COVID-19 patients. In contrast, focused immune responses driven by interferon-alpha are associated with survival.
Researchers at the University of Alabama at Birmingham found that SARS-CoV-2 viruses grown in successive generations exhibit increased infectivity, binding to heparan sulfate, and reduced virulence. The study suggests that evolved strains may be used as a basis for development of stable live attenuated vaccines.
Researchers investigated aerosol production from singing and playing wind instruments to develop recommendations for minimizing COVID transmission. They found that placing a surgical mask reduced plume velocities and lengths, decreasing aerosol concentrations.
A study has identified key risk factors for SARS-CoV-2 infection among farmworkers in California. These include proximity to infected individuals, lack of personal protective equipment (PPE), and seasonal flu-like symptoms.
A Michigan Medicine study found that most patients with mild COVID-19 infections produce antibodies that persist and protect them from reinfection for up to six months. Nearly 90% of participants produced spike and nucleocapsid antibody responses, and all but one had persistent antibody levels at follow-up.
Researchers analyzed genome sequences and mobile phone data to track Covid-19 spread in Bangladesh. A three-day window between lockdown announcements and enforcement led to increased infections as citizens traveled to other areas.
Researchers analyzed over 2000 SARS-CoV-2 protein structures to identify viral proteins that 'mimic' and 'hijack' human proteins. The study found three coronavirus proteins that 'mimicked' human proteins, allowing the virus to evade the immune system and contribute to variation in COVID-19 outcomes.
A new study from La Jolla Institute for Immunology shows that the Moderna COVID-19 vaccine generates durable T cell memory and antibodies, even in people over 70. The researchers found strong CD4+ and CD8+ T cell responses to the vaccine, comparable to those seen in recovered COVID-19 patients.
Researchers used complex computer simulations to study the attachment of SARS-CoV-2 and its variants to human cells. They found that the virus has two main locations where it grabs onto the host cell receptor ACE2, with early strains having a slippery interaction at one region that becomes less slippery as variants evolve.
Researchers found that coloured and 3D images of SARS-CoV-2 increase perceived infectivity, while beauty detracts from educational value. The study highlights the role of media in distributing visually appealing yet potentially misleading information about the pandemic.
A team of researchers from the Beckman Institute for Advanced Science and Technology has developed a fast, accurate, and cost-effective COVID-19 test. Using label-free microscopic imaging combined with artificial intelligence, they can detect and classify SARS-CoV-2 in under one minute.
A study conducted by RCSI has demonstrated that a saliva PCR test is almost as accurate as the standard nose and throat swab, enabling greater capacity for frequent testing. The saliva screening represents a less invasive alternative with the potential to increase compliance with screening.
Researchers have identified nine FDA-approved drugs that can effectively suppress SARS-CoV-2 replication in human cells. These compounds have been shown to be safe in humans and could potentially provide an alternative treatment for COVID-19 patients.
A study led by Duke University researchers found that nearly 2.7 million people in the US lost employer-based health insurance during the spring and summer of 2020, but gained coverage through government programs like Medicaid. The study suggests that recent policy changes created a safety net to support those affected by job loss.
Scientists at CIBFar have discovered the molecular mechanism of SARS-CoV-2's main protease, which enables the virus to replicate in host cells. The study provides valuable insights into the process and has immediate applications for developing antiviral drugs.
A recent study found that breastfeeding mothers who received Pfizer-BioNTech or Moderna COVID-19 vaccines experienced temporary symptoms such as pain and swelling at the injection site, chills, muscle/body aches, fever, and vomiting. The study also reported no serious side effects in breastfed infants.
Researchers at the University of California - San Diego have developed COVID-19 vaccine candidates made from plant viruses and bacteriophages, which can be stored and shipped without refrigeration. These vaccines trigger high production of neutralizing antibodies in mice, offering a potential solution for global distribution efforts.
Researchers analyzed plasma and single immune cells from nearly 200 COVID-19 patients and found metabolic changes associated with disease severity. The study's findings could lead to better therapies targeting immune-metabolic changes in severe disease cases.
New research found that COVID-19 infection does not significantly impact lung function in young adults, including those with asthma. Lung function in children and adolescents also appears to be unimpaired after infection, apart from severe cases.
The Delta variant's ability to evade neutralizing antibodies and its increased infectivity have contributed to its spread, making vaccination and infection control crucial in the post-vaccination era. The variant was found to be more efficient at replicating and spreading than other variants, giving it a selection advantage.
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.
A new diagnostic system developed by RIKEN researchers can rapidly and sensitively measure COVID-19 antibodies, enabling precise testing at medical facilities. The system uses a microchip to detect antibodies with sensitivity 500 times higher than conventional methods.
A recent study analyzed data from the Centers for Disease Control and Prevention's coronavirus self-checker to identify symptoms reported by adults with and without SARS-CoV-2 infection following a loss of taste or smell. The results revealed distinct symptom profiles for individuals with and without the virus.
The study found SARS-CoV-2 antibodies in 44% of blood donors aged 16 to 64 in Kenya. The results suggest that the virus may have circulated in the country before widespread reporting began.
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.
A national study shows that reducing US jail populations leads to community-wide public health benefits, as overcrowded facilities become 'infectious disease incubators' for COVID-19. Decarceration reduces the spread of SARS-CoV-2, benefiting both those released and communities nationwide.
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 novel COVID-19 vaccine candidate demonstrates high efficacy in preclinical models by stimulating the immune system and inducing a robust neutralizing antibody response. The vaccine protects against reinfection and provides better protection than natural immunity, making it a potential supplement to existing vaccines.
Research reveals a significant decline in kidney function among COVID-19 long-haulers and even those with mild infections. The study highlights the critical need for paying attention to kidney function and disease in caring for patients who have had COVID-19, as kidney problems can be silent and untreated until it's too late.
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.
The SARS-CoV-2 Lambda variant has been detected in over 30 countries worldwide, with rapid spread in Peru and low circulation in neighboring countries. The study found that the variant's infectivity is high, but its effects on clinical severity and vaccine effectiveness are poorly documented.
Researchers have simulated the SARS-CoV-2 spike protein structure and found that glycans play a crucial role in cell entry. Disrupting these structures could potentially halt virus transmission. The study provides insight into potential targets for COVID-19 treatment and vaccine development.
A recent study by researchers at the University of Helsinki found that low-density granulocytes (LDG) play a significant role in weakening the immune response in covid-19 patients. The study revealed that LDGs inhibit T lymphocyte division, leading to suppressed adaptive immunity against the virus.
Researchers at West Virginia University are monitoring wastewater statewide for COVID-19 using an egg-shaped robot that collects samples every 20 minutes. The project aims to develop a testing network throughout the state, providing early indicators of changes in community-level spread of COVID-19.
A comprehensive review finds that many respiratory viruses, including SARS-CoV-2, influenza, and measles, can spread through airborne transmission via aerosols. The study's findings suggest that indoor air quality and ventilation play a crucial role in reducing the transmission of infectious virus-laden aerosols.
A study estimates that 103 million Americans had COVID-19 by the end of 2020, accounting for 31% of the population. Undocumented cases accounted for three-quarters of infections, which were often mild or asymptomatic.
Researchers created a model to estimate viral population variability using epidemiological data, predicting the emergence of novel variants. The study suggests that lack of vaccination increases mutation frequency and spread.
A new study by OHSU researchers found that blood serum from vaccinated or infected individuals shows significantly reduced defense against two widely circulating SARS-CoV-2 variants. The findings emphasize the importance of vaccinations combined with maintaining public health measures to cut off the spread of the virus.
Scientists analyzed two telecommuting strategies to slow Sars-CoV-2 spread; the 'rotating week-by-week' approach was most effective in controlling epidemics. By combining these strategies with health measures, local reproduction numbers can be effectively controlled.
Research from Virginia Tech found that women report greater fear of health risks from COVID-19, while men express more concern about economic implications. The study suggests that emphasizing both health and economic benefits can encourage people to take preventative measures.
Researchers developed a new model to study turbulent puffs, revealing the impact of temperature and humidity on turbulence. The findings suggest that buoyancy plays a significant role in shaping the behavior of tiny fluctuations within the puff, which can affect the movement of airborne droplets.
A review of scientific literature found pregnant women infected by SARS-CoV-2 have a higher risk of developing pre-eclampsia due to reduced ACE2 availability. ACE2 plays a crucial role in placental development, blood pressure control, and fetal development, making its impairment more susceptible to serious complications.
Research from the University of Florida found that COVID-19 vaccination significantly increases antibodies against SARS-CoV-2 in breast milk, providing passive immunity to newborns. The study suggests that vaccinated mothers can help protect their babies from COVID-19 illness.
Scientists have developed stable peptide mimics called peptoids to treat viruses and prevent infections. Peptoids, such as those tested against SARS-CoV-2 and HSV-1, could one day cure or prevent many kinds of infections, including COVID-19.
Researchers have identified a potential advantage of weakened SARS-CoV-2 variants as immunogens, sparking interest in their use for live-attenuated vaccines. The variants, which emerge rapidly during cell culture propagation, show resistance to subsequent infection with both the parental strain and emerging variants.
Carnivorous animals lack key genes needed to detect and respond to infection, making them asymptomatic carriers of disease-causing pathogens. This can lead to the formation of undetected disease reservoirs that can mutate and become a risk to human health.
The COVID-19 pandemic led to an increase in the proportion of community-dwelling homebound adults aged 70 or older in the US, particularly among Black non-Hispanic and Hispanic/Latino individuals. Compliance with social distancing measures is believed to be a key factor contributing to this trend.
Researchers at WashU Medicine have identified an antibody that is highly protective at low doses against a wide range of viral variants. The antibody targets a part of the virus' spike protein that differs little across variants, making it unlikely to lose potency as the virus mutates.
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.