SARS CoV 2 News and Research

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Prioritization of COVID-19 vaccines saves lives, reduces spread of infection

Waiting for your turn can be frustrating, especially when it comes to COVID-19 vaccinations. But prioritizing who receives the limited supply of vaccines available saves lives and reduces spread of infection, according to a study published today in the journal PNAS from the University of California, Davis.

2 Apr 2021

Scientists identify nine potential new COVID-19 treatments

A team led by scientists in the Perelman School of Medicine at the University of Pennsylvania has identified nine potential new COVID-19 treatments, including three that are already approved by the Food and Drug Administration (FDA) for treating other diseases.

2 Apr 2021

Higher B.1.1.7 transmission in households than other SARS-CoV-2 variants

Contact tracing data from a new preprint study on the medRxiv* preprint server provides further evidence that the B.1.1.7 variant — first reported in the United Kingdom — has a high transmission rate. The research, led by Birgitte Freiseleben de Blasio from the Norwegian Institute of Public Health and the University of Oslo in Norway, estimates B.1.1.7 has a 60% greater transmission within households than other severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern.

2 Apr 2021

Study finds CD8+ T cell responses detect all major SARS-CoV-2 variants

There have been concerns that several SARS-CoV-2 variants have mutations that allow them to evade the immune system. A new study published in the Open Forum Infectious Diseases suggests otherwise. Led by Aaron AR Tobian of Johns Hopkins University School of Medicine, results showed that except for one from the B.1.351 variant, CD8+ T cells showed a broad response to all SARS-CoV-2 variants.

2 Apr 2021

Long-COVID-19 is a significant risk in recovered patients post-hospitalization

A new study, which appeared in the British Medical Journal, reports on a retrospective study to examine the incidence and risk factors for ‘long COVID-19’, the term used to describe the long-term effects of COVID-19 on affected individuals.

2 Apr 2021

Proper choice of control group nullifies most observed genetic markers for severe COVID-19, study suggests

A new study deals with the genetic contribution to severe disease following infection with this virus, showing that the association of severity with specific human genes described in an earlier study is not obvious.

2 Apr 2021

Researchers offer large-scale screening of potential broad-spectrum SARS-CoV-2 antivirals

A new study describes the identification of new compounds from a library, with inhibitory activity against several coronaviruses. This study shows the utility of this method, besides identifying compounds that not only inhibit viral shedding in SARS-CoV-2 cultures, but have an immunomodulatory effect that may be useful in mitigating the damaging cytokine storm typical of severe or critical COVID-19.

2 Apr 2021

Battle brews over neutral zone where border-crossing parties rendezvous, risking detection and infection

In the shadows of Covid travel restrictions, a 42-acre park on the far western edge of the U.S.-Canadian dividing line has become a popular opening in an otherwise closed border, a place where Americans and Canadians can gather without needing permission to go through an official border crossing.

2 Apr 2021

Comparative study of SARS, MERS, BAT‐SARS, and SARS-CoV-2

Even though a comparative study on the genomic sequences of SARS-CoV, MERS-CoV, and SARS-CoV-2 is available, there is a gap in the research in regards to the comparison between four types of coronaviruses, namely, SARS-CoV, MERS-CoV, BAT-CoV, and SARS-CoV-2. A new study, which deals with the genomic comparison between the sequence of the above-stated four types of coronaviruses, has been published in the Journal of Medical Virology.

2 Apr 2021

Study investigates the efficacy of COVID-19 vaccines over longer term

COVID-19 vaccines were designed to reduce the likelihood that infection by the SARS-CoV-2 virus would lead to severe outcomes, such as hospitalization and death. In that sense, all of the currently approved vaccines -- Moderna, Pfizer and Johnson & Johnson -- have proven comparably effective.

2 Apr 2021

Highly contagious SARS-CoV-2 variant was spreading for months before its discovery

A highly contagious SARS-CoV-2 variant was unknowingly spreading for months in the United States by October 2020, according to a new study from researchers with The University of Texas at Austin COVID-19 Modeling Consortium.

2 Apr 2021

Study identifies new cardiometabolic factors linked to SARS-CoV-2 infection

As the COVID-19 pandemic lingers, researchers have found associations between certain lifestyle factors and a person's risk of getting infected.

1 Apr 2021

Study discovers new target on SARS-CoV-2 spike for protective antibodies

Researchers at The Scripps Research Institute, USA, have described a potential target for COVID-19 vaccines. Dubbed as CC40.8 bnAb, it exhibited broad reactivity with human beta coronaviruses.

1 Apr 2021

Can asymptomatic COVID-19 confer long-term immunity?

Researchers examined the antibody responses in symptomatic and asymptomatic individuals recovered from COVID-19 to see if there was a discernable difference in their humoral immune responses and long-term protection from reinfection with SARS-CoV-2.

1 Apr 2021

Glycans influence SARS-CoV-2 spike–ACE2 binding affinity, finds study

A study conducted at the Los Alamos National Laboratory, USA, and Concordia University, Canada, has explored the impact of different types of glycans on the interaction between SARS-CoV-2 spike protein and human ACE2 receptor.

1 Apr 2021

Could a flavonoid found in common fruit and vegetables combat COVID-19?

Researchers in India have gathered and presented a large body of evidence highlight quercetin – a flavonoid molecule found in many common fruits and vegetables – may be developed into drug therapies used to combat COVID-19.

1 Apr 2021

COVID-19 surges are driven by appearance of new SARS-CoV-2 variants, genome sequencing shows

Genome sequencing of thousands of SARS-CoV-2 samples shows that surges of COVID-19 cases are driven by the appearance of new coronavirus variants, according to new research from the School of Veterinary Medicine at the University of California, Davis published April 1 in Scientific Reports.

1 Apr 2021

Researchers develop a recombinant SARS-CoV-2 receptor-binding domain trimer vaccine candidate

New research deals with the development of RBD trimer as a potent target for SARS-CoV-2 subunit vaccines. This study revealed the development of a trimeric RBD subunit vaccine candidate that could induce strong humoral and cellular immune responses in nonhuman primates (NHPs), namely, rhesus macaques.

1 Apr 2021

FDA takes action to advance OTC and other screening test development

Following recent U.S. Food and Drug Administration actions to support test development, the FDA took swift action this week to get more tests for screening asymptomatic individuals on the market. Today, the agency authorized several tests for over-the-counter (OTC) use without a prescription when used for serial screening.

1 Apr 2021

Temperature difference in the upper and lower respiratory tract influences SARS-CoV-2 replication

A team of researchers from the Institute for Infectious Diseases (IFIK) at the University of Bern and the Federal Institute of Virology and Immunology (IVI) have assessed virus growth and activation of the cellular defense mechanisms in the respiratory tract.

1 Apr 2021