immunity News and Research

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SARS-CoV-2 variants do not substantially affect CD4+ and CD8+ T cell responses, study shows

Researchers from California in the United States have conducted a study showing that important adaptive immune responses to infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are not affected by four recently emerged variants of the virus.

3 Mar 2021

Study shows lower antibody cross-reactivity after infection with the B.1.1.7 SARS-CoV-2 variant

In a recent research paper currently available on the bioRxiv* preprint server, a diverse group of researchers has examined the immunogenicity of antibodies against the variant B.1.1.7 of the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) initially found in the United Kingdom – and revealed diminished recognition and neutralization of either parental strains or the South African variant.

3 Mar 2021

Pfizer SARS-CoV-2 vaccine effective from day 11 post 1st vaccination

New research from a team of scientists in Australia finds that the second ‘booster’ dose of the Pfizer-BioNTech vaccine did not increase vaccine efficacy against severe acute respiratory syndrome (SARS-CoV-2), the causative agent of coronavirus disease 2019 (COVID-19). The results suggest one dose of the vaccine was sufficient in providing a robust immune response 11 days after inoculation.

3 Mar 2021

Researchers to investigate COVID-19's disproportionate impact on long-term care residents and workers

Long-term care facilities have been disproportionately burdened by COVID-19, accounting for about 60% of COVID-19 deaths nationwide, 70% if retirement homes are included.

3 Mar 2021

Research shows a causal relationship between neonatal antibody production and maternal microbiota

A healthy system of gut bacteria, or microbiota, is crucial to health: Gut bacteria not only aid with digestion, but also play an important role in the body's immune response. Infants, however, are not born with full-fledged gut microbiota, which makes it difficult for them to fight off intestinal infections.

3 Mar 2021

Vaccine candidate shows promise to protect against dozen-plus flu strains

Ask Eric Weaver about pandemics, and he's quick to remind you of a fact that illustrates the fleeting nature of human memory and the proximal nature of human attention: The first pandemic of the 21st century struck not in 2019, but 2009.

3 Mar 2021

Obesity may reduce COVID-19 vaccine efficacy, say researchers

A startling indicates that obesity may reduce the immune response to the current COVID-19 vaccines, along with other factors like age and sex. This could have significant implications for vaccination strategies in obese people.

3 Mar 2021

Delayed second dose strategy with mRNA vaccines may reduce COVID-19 mortality, say researchers

An interesting new preprint shows that even if countries are forced to delay the second dose of the current vaccines administered against SARS-CoV-2, to arrest the ongoing COVID-19 pandemic, the cumulative mortality would still fall significantly.

3 Mar 2021

Researchers examine long-term immune responses following COVID-19 across clinically diverse cohort

A new study by researchers at the University of California, San Francisco, discusses the different aspects of long-term immune responses in a wide sample of patients, as well as how they vary in clinical severity and sequelae.

3 Mar 2021

Novel SARS-CoV-2 spike vaccine candidate produces strong neutralizing response in vivo

A new study by researchers at Mahidol University in Bangkok, Thailand, reports a COVID-19 vaccine candidate called HexaPro in producing neutralizing antibodies against the SARS-CoV-2 spike protein in an animal model.

3 Mar 2021

A model of vaccine-derived herd immunity against COVID-19 in heterogeneous populations

A recent theoretical paper, currently available on the medRxiv preprint server, unveils a novel vaccination model that shows how a herd immunity threshold (HIT) value which considers heterogeneity is substantially lower in comparison with a HIT value of assuming a homogeneous population – with many implications for further vaccination planning.

2 Mar 2021

New nanoparticle-delivered COVID-19 vaccine candidate shows efficacy in ferret model

Researchers from Cleveland Clinic's Global Center for Pathogen Research & Human Health have developed a promising new COVID-19 vaccine candidate that utilizes nanotechnology and has shown strong efficacy in preclinical disease models.

2 Mar 2021

Ethnic minorities have less access to COVID-19 vaccines, finds study

A new study discusses the results of a survey including well over 1.3 million participants in the UK and the USA. During the initial part of the vaccination campaign – that is, the phase including February 1, 2021 – the researchers found significantly more hesitancy towards the vaccine among Black, Asian, and Hispanic communities, as well as greater difficulty in accessing vaccines among them.

2 Mar 2021

Successful SARS-CoV-2 vaccination hinges on non-pharmaceutical interventions and vaccine deployment strategies

A thought-provoking new study server discusses the factors that determine the successful use of available vaccines to mitigate incidence and mortality rates for COVID-19.

2 Mar 2021

Moderna vaccine reduces viral spread by at least 60 percent, finds study

An interesting new study by researchers at Harvard T.H. Chan School of Public Health in the U.S. suggests that the currently used Moderna vaccine reduces viral shedding by about 60%.

2 Mar 2021

Scientists establish infection models for SARS-CoV-2 UK & South African variants

New research suggests Syrian golden hamsters could be a potentially useful preclinical model for testing vaccine immunity against the acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.17 and B.1.351 variant.

1 Mar 2021

Enduring antibody response observed after natural immunity and first Pfizer SARS-CoV-2 vaccine shot

Immunity gained after natural infection from the acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is boosted when people take the first Pfizer-BioNTech vaccine, according to a new study led by Iain C. Chapple from the University of Birmingham.

1 Mar 2021

Tier 3 interventions needed to contain SARS-CoV-2 transmission, especially with emergence of variants

Studies have shown that non-pharmaceutical interventions (NPIs) such as social distancing and partial lockdowns effectively contain severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission. However, because of these measures' huge economic and social cost, the UK introduced a less socially disruptive tier system. This system was aimed at providing a consistent set of control measures with geographic flexibility.

1 Mar 2021

Study: Highly efficient and balanced immune response key to avoiding COVID-19 symptoms

By analyzing blood samples from individuals infected with SARS-CoV-2, researchers in Singapore have begun to unpack the different responses by the body's T cells that determine whether or not an individual develops COVID-19.

1 Mar 2021

Protein kinase inhibitors could help treat immunodeficiency in HIV patients

HIV infections are treated with antiviral drugs which effectively prevent the disease from developing. While pharmacological HIV therapy has advanced considerably, the virus cannot be entirely eliminated from the body with currently available drugs.

1 Mar 2021

immunity News and Research

SARS-CoV-2 variants do not substantially affect CD4+ and CD8+ T cell responses, study shows

Study shows lower antibody cross-reactivity after infection with the B.1.1.7 SARS-CoV-2 variant

Pfizer SARS-CoV-2 vaccine effective from day 11 post 1st vaccination

Researchers to investigate COVID-19's disproportionate impact on long-term care residents and workers

Research shows a causal relationship between neonatal antibody production and maternal microbiota

Vaccine candidate shows promise to protect against dozen-plus flu strains

Obesity may reduce COVID-19 vaccine efficacy, say researchers

Delayed second dose strategy with mRNA vaccines may reduce COVID-19 mortality, say researchers

Researchers examine long-term immune responses following COVID-19 across clinically diverse cohort

Novel SARS-CoV-2 spike vaccine candidate produces strong neutralizing response in vivo

A model of vaccine-derived herd immunity against COVID-19 in heterogeneous populations

New nanoparticle-delivered COVID-19 vaccine candidate shows efficacy in ferret model

Ethnic minorities have less access to COVID-19 vaccines, finds study

Successful SARS-CoV-2 vaccination hinges on non-pharmaceutical interventions and vaccine deployment strategies

Moderna vaccine reduces viral spread by at least 60 percent, finds study

Scientists establish infection models for SARS-CoV-2 UK & South African variants

Enduring antibody response observed after natural immunity and first Pfizer SARS-CoV-2 vaccine shot

Tier 3 interventions needed to contain SARS-CoV-2 transmission, especially with emergence of variants

Study: Highly efficient and balanced immune response key to avoiding COVID-19 symptoms

Protein kinase inhibitors could help treat immunodeficiency in HIV patients

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