In a study published in mBio, researchers from Ohio State University have been investigating mutations in the rest of the spike protein, particularly the Q677H mutation. Study: Neutralization of SARS-CoV-2 Variants of Concern Harboring Q677H. Image Credit: joshimerbin/ Shutterstock Background Since mass vaccination began, most worries about coronavirus disease 2019 (COVID-19) in developed countries focus […]
Breakthrough research reveals why some Covid patients may die from the disease
The number of Covid cases in the UK has risen 12% this week, but while some people may be hospitalized, others will suffer little more than a loss of smell. London Medical Laboratory says new research is now revealing everyone’s immune system is as unique as their fingerprint. Dr Quinton Fivelman PhD, Chief Scientific Officer […]
Two proteins joined together using a free-standing, rigid link
Researchers at the Paul Scherrer Institute PSI are the first to have joined two proteins together by means of a free-standing, rigid link. The structural element holds the two protein molecules together at a defined distance and angle, much the way a barbell handle connects two weights. This type of linkage could help, for example, […]
Effect of prior SARS-CoV-2 infection on post-vaccination SARS-CoV-2 spike IgG antibodies
Natural infection or vaccination against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) confer considerable protection against reinfection and reduce the risk of severe Coronavirus disease 2019 (COVID-19) outcomes. However, reports on decaying neutralizing antibody (Ab) levels against SARS-CoV-2 have raised questions regarding long-term immunity. Sporadic breakthrough infections have been reported after vaccination due to lower […]
ACTG announces positive data for monoclonal antibody combination therapy from the ACTIV-2 study
The AIDS Clinical Trials Group (ACTG), the largest global HIV research network, which has expanded its focus to include evaluating outpatient treatment for COVID-19, today announced positive data for the monoclonal antibody combination therapy BRII-196/BRII-198 from the ACTIV-2 study of Outpatient Monoclonal Antibodies and Other Therapies. In an interim analysis of the phase 3 evaluation […]
Antibodies produced by SARS-CoV-2 variants vary in ability to neutralise other variants of the virus
Researchers at the Francis Crick Institute and University College London Hospitals NHS Foundation Trust (UCLH) have studied whether antibodies produced as a result of infection with one SARS-CoV-2 variant are able to bind to and neutralize other variants. Over the course of the pandemic, various COVID-19 variants have arisen with the Delta variant currently dominant […]
Scientists suspect Lambda SARS-CoV-2 variant most dangerous
In late December 2019, a novel coronavirus was first reported in Wuhan, China, which showed high infectivity and caused pneumonia-like symptoms. Scientists later identified this RNA virus as the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus. Owing to rapid mutations, the continual emergence of several SARS-CoV-2 variants have been reported, among which some are […]
Swedish study reveals how long immunity lasts after mild COVID
As a result of the ongoing pandemic of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its associated disease, the coronavirus disease 2019 (COVID-19), the global public health at risk has never been more dire. As a result of SARS-CoV-2 infection, antibodies are produced against a range of viral antigens, including the spike and […]
Determination of vaccine-elicited immunoglobulins in milk post mRNA-based COVID-19 vaccination
Scientists have reported that in most cases, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causal agent of the ongoing coronavirus disease 2019 (COVID-19) pandemic, mildly infects infants. However, around 10% of infants experienced severe COVID-19 infection who required advanced medical treatments. In rare cases, even asymptomatic infection can result in Multisystem Inflammatory Syndrome in […]
Analysis of COVID-19 patients with repeatedly positive SARS-CoV-2 tests
The rapid spread of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has caused the coronavirus disease 2019 (COVID-19) pandemic. To date, the virus has claimed more than 3.8 million lives worldwide. The reverse transcriptase-polymerase chain reaction (RT-PCR) is considered the gold standard for detecting SARS-CoV-2 in upper and lower respiratory specimens as well as for […]