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Pfizer-BioNTech mRNA vaccine reduces both symptomatic and asymptomatic COVID-19 infection in case study

Follow-up of vaccinated and unvaccinated individuals at St. Jude Children’s Research Hospital revealed asymptomatic infection reduced by 90% and symptomatic infections reduced by up to 96% in vaccinated people compared to those not vaccinated.

7 May 2021

How did SARS-CoV-2 first evolve in humans?

In a perspective article recently published in the journal Science, Hyeryun Choe and Michael Farzan from the Scripps Research Institute, USA, have described the early-stage evolution of SARS-CoV-2 in humans. They have provided a detailed overview of how early mutations in SARS-CoV-2 spike protein facilitate its adaptation in human systems.

7 May 2021

Immunosuppression in COVID-19 promotes emergence of multiple immune escape mutants

An interesting new study describes the emergence of several such variants from a chronically immunosuppressed COVID-19 patient, who remained infected for over 170 days before clearing the virus.

7 May 2021

The ancestor of SARS-CoV-2’s Wuhan strain was circulating in late October 2019

The SARS-CoV-2 was first reported in a case from Wuhan, China, in December 2021, and subsequently became the cause of the COVID-19 pandemic that is ravaging the world today. A new study in the journal Molecular Biology and Evolution tracks its variants all over the world since the onset of the pandemic.

7 May 2021

Are infants at greater risk of COVID-19 than children?

The widely circulating SARS-CoV-2 has caused the devastating COVID-19 pandemic. The impact of this infection varies significantly with age, sparing young children for the most part, though not completely. However, a new study, released as a preprint on the medRxiv* server, shows that infants are not as resistant to the virus as children are. The researchers trace this to the expression of ACE2 to varying extents in different groups.

7 May 2021

Could antiviral surface designs help reduce SARS-CoV-2’s spread?

In an effort to improve surface decontamination methods, researchers from the Indian Institute of Technology (IIT), Bombay, looked at fabricating surfaces with virucidal properties. More specifically, these scientists investigated surface properties that could prevent the survival of viruses on these surfaces, particularly SARS-CoV-2.

7 May 2021

Human organoids useful for modeling COVID-19 variants of concern, finds study

A new study published on the bioRxiv* preprint server found that using human organoids could help with better characterizing the phenotype of several viral variants, including B.1.1.7. Their findings show the ribonucleic acid (RNA) shedding of the SARS-CoV-2 variant correlated with viral fitness and infectiousness.

7 May 2021

Increased symptomatic levels of COVID-19 may be associated with psychiatric symptoms

A significant level of symptoms of depression, anxiety and post-traumatic stress may follow COVID-19 independent of any previous psychiatric diagnoses, according to new research by Columbia University Mailman School of Public Health with colleagues at Universidade Municipal de São Caetano do Sul in Brazil.

7 May 2021

Highly efficient immune response in asymptomatic SARS-CoV-2 patients

Researchers in Singapore have investigated the role of SARS-CoV-2-specific antibodies and T-cells in asymptomatic individuals suffering from COVID-19. They found that, contrary to some initial hypotheses, asymptomatic individuals mount an adaptive immune response on par with symptomatic individuals, demonstrating that T cell response does not appear to be correlated with symptom severity.

7 May 2021

SARS-CoV-2 infection prolongs viral shedding and lymphocyte loss in patients with cancer

Patients with cancer have a more challenging time with infections while undergoing treatment — placing them as high-risk for severe COVID-19 illness and death. However, how the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) interacts with cancer therapies remains poorly understood.

7 May 2021

Cryptic pocket on the surface of SARS-CoV-2 may be a promising treatment target

In a new study currently available on the bioRxiv* preprint server, a multinational group of researchers modeled an entire membrane-embedded spike glycoprotein of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and highlighted the potential of a specific mapping approach for unveiling cryptic, potentially druggable pockets on the viral surface.

7 May 2021

Study reports vitamin C inhibits SARS-CoV-2 virus main protease

Based on structural analysis, researchers found that vitamin C binds to 3CLpro, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) main protease essential in viral replication. In vitro cell inhibition studies also showed vitamin C could inhibit 3CLpro, indicating a possible new antiviral treatment method.

6 May 2021

Israeli study shows real-world efficacy of Pfizer-BioNTech’s COVID-19 vaccine

Researchers have conducted an analysis of nationwide surveillance data from Israel demonstrating the real-world effectiveness of Pfizer-BioNTech’s BNT162b2 vaccine at protecting against infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) – the agent that causes coronavirus disease 2019 (COVID-19).

6 May 2021

Indian SARS-CoV-2 variant shows enhanced host cell entry and immune evasion

A study conducted by researchers in Germany has found that the B.1.617 variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that has emerged in India entered certain types of lung and intestine cells with slightly increased efficiency compared with the original wild-type strain.

6 May 2021

Unemployed Australian citizens experience mental health deterioration during COVID-19 pandemic, finds study

A team of scientists in Australia has recently investigated the health condition of Australian citizens who lost jobs during the coronavirus disease 2019 (COVID-19) pandemic. The study findings reveal that job loss is associated with a deterioration in mental health but an improvement in physical health. Importantly, retaining employment has shown a positive impact on the overall mental health condition.

6 May 2021

SARS-CoV-2 is activated for fusion by a broad range of proteases, finds study

A team of researchers from the University of Virginia, USA, used single-virus fusion experiments with exogenously controlled proteases to investigate the mechanism of activation directly. They found that the subcellular location of entry depends on the protease activity of the various components, and parallel pathways are possible.

6 May 2021

Transplant recipients with COVID-19 may show lower cellular and antibody immune responses

Transplant patients are typically on chronic immunosuppression, making them automatically more vulnerable to infection with SARS-CoV-2, the agent responsible for the loss of over three million lives in the current COVID-19 pandemic. A new study discusses evidence for subnormal immune responses following COVID-19 in this population.

6 May 2021

Aberrant immune features in healthy elderly and male subjects with severe COVID-19 may predate infection

A new study shows that the immunological features of severe COVID-19 are already present in healthy older adults and in men, before they are infected, indicating a possible explanation for this differential susceptibility towards the virus.

6 May 2021

Could stem cells improve the outcome of ARDS in severe COVID-19?

A recent study, published in Stem Cells Translational Medicine, explores the safety and efficacy of stem cells, which have been touted as the panacea for a wide range of illnesses, ranging from chronic degenerative conditions to cancer.

6 May 2021

About 84% of antibodies in plasma target non-RBD epitopes on SARS-CoV-2 spike protein, finds study

In a new study recently published in the journal Science, a team of researchers in the U.S. found that most of the antibodies circulating in the blood target areas of the viral spike protein outside the receptor-binding domain (RBD), the part of the spike that binds directly to human cell receptors.

6 May 2021

Syndrome News and Research

Pfizer-BioNTech mRNA vaccine reduces both symptomatic and asymptomatic COVID-19 infection in case study

How did SARS-CoV-2 first evolve in humans?

Immunosuppression in COVID-19 promotes emergence of multiple immune escape mutants

The ancestor of SARS-CoV-2’s Wuhan strain was circulating in late October 2019

Are infants at greater risk of COVID-19 than children?

Could antiviral surface designs help reduce SARS-CoV-2’s spread?

Human organoids useful for modeling COVID-19 variants of concern, finds study

Increased symptomatic levels of COVID-19 may be associated with psychiatric symptoms

Highly efficient immune response in asymptomatic SARS-CoV-2 patients

SARS-CoV-2 infection prolongs viral shedding and lymphocyte loss in patients with cancer

Cryptic pocket on the surface of SARS-CoV-2 may be a promising treatment target

Study reports vitamin C inhibits SARS-CoV-2 virus main protease

Israeli study shows real-world efficacy of Pfizer-BioNTech’s COVID-19 vaccine

Indian SARS-CoV-2 variant shows enhanced host cell entry and immune evasion

Unemployed Australian citizens experience mental health deterioration during COVID-19 pandemic, finds study

SARS-CoV-2 is activated for fusion by a broad range of proteases, finds study

Transplant recipients with COVID-19 may show lower cellular and antibody immune responses

Aberrant immune features in healthy elderly and male subjects with severe COVID-19 may predate infection

Could stem cells improve the outcome of ARDS in severe COVID-19?

About 84% of antibodies in plasma target non-RBD epitopes on SARS-CoV-2 spike protein, finds study

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