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Clinical trial evaluating mixed COVID-19 vaccine schedules begins at NIH

Vaccination efforts against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus behind the coronavirus disease (COVID-19) pandemic, are well underway in many countries. Over 2 billion vaccines have been administered to date, and campaigns continue to encourage more people to get vaccinated.

4 Jun 2021

Heterologous AstraZeneca and Pfizer vaccines induce strong immune response and T cell reactivity against multiple SARS-CoV-2 variants

Researchers from Germany recently analyzed a cohort of 26 individuals in the age range of 25 to 46 (median 30.5) years who had received a ChAdOx1 nCoV-19 prime vaccine followed by a BNT162b2 boost vaccine after a 56-day interval due to changing vaccine recommendations in Germany. There were 16 females and 10 males in the cohort, and they were assessed for immune responses, reactogenicity, and T cell reactivity. This study is published on the medRxiv* preprint server.

3 Jun 2021

Can immunity form and interaction with seasonal coronaviruses influence SARS-CoV-2 epidemiology?

A new study hypothesizes that cross-protection from seasonal epidemics of HCoVs could not only affect SARS-CoV-2 transmission but also protect children from the disease.

2 Jun 2021

Pfizer-BioNTech COVID-19 vaccine may not be associated with adverse effects on fertility and breastfeeding, says study

A recent study by researchers in Singapore shows the absence of evidence for adverse effects on fertility or the presence of the vaccine mRNA (messenger ribonucleic acid) in breast milk, following the administration of the Pfizer BNT162B2 COVID-19 vaccine. This supports efforts to prevent the spread of false information about the effects of the vaccine.

27 May 2021

Previous H3N2 influenza A infection may explain some cases of severe COVID-19

According to research from the University of California, some cases of severe coronavirus disease 2019 (COVID-19) may be related to the immunological memory of previous H3N2 influenza A infection.

26 May 2021

Heterologous prime-boost immunization with AstraZeneca and Pfizer COVID-19 vaccines safe and well-tolerated, study finds

A team of scientists from Germany has recently evaluated the reactogenicity profile of heterologous ChAdOx1 nCoV-19/BNT162b2 prime-boost vaccination among healthcare workers. The findings reveal that a 12-week interval regimen of heterologous vaccination is well-tolerated among participants. The study is currently available on the medRxiv* preprint server.

25 May 2021

Can SARS-CoV-2 trigger amyloidosis?

A new study, released as a preprint on the bioRxiv* server, describes the results of an analysis of the role played by the virus in amyloid formation, with its subsequent effects on the health of various organs and of the whole organism.

21 May 2021

Researchers define immune determinants of protection against SARS-CoV-2 in mice

Researchers in the United States have conducted a preclinical study defining the roles that different arms of the immune system play in fighting primary infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), as well as reinfection and infection following SARS-CoV-2 vaccination.

21 May 2021

Stem cell therapy for COVID-19 and ARDS

In a review paper recently uploaded to the journal Biomedicine & Pharmacotherapy by Mahendiratta et al. (May 2021) the applicability of stem cells in treating severe SARS-CoV-2 infection is investigated, with regard to ARDS therapy.

5 May 2021

Class I HLA alleles shape CD8+ T cell repertoire in SARS-CoV-2 infection

An interesting new study discusses how adaptive cellular immunity against the SARS-CoV-2 is dependent on differences in HLA-encoding genes between patients.

3 May 2021

Live "attenuated" influenza virus vaccine protects animals against respiratory infections, including SARS-CoV-2

Researchers in the United States and Austria have demonstrated the potential of a modified influenza virus as a vaccine to protect against viral respiratory pathogens, including the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that causes coronavirus disease 2019 (COVID-19).

2 May 2021

Host protein mimicry of SARS-CoV-2 receptor binding motif

In a new study, structural bioinformatics approaches are employed to investigate the potential mimicry of the receptor-binding motif (RBM) of these three coronaviruses, finding that several proteins from both human and non-human sources were similar to each, with implications regarding the mechanism of infection and tropism of SARS-CoV-2.

29 Apr 2021

Novel approach to gene editing bypasses disease-causing mutations in a gene

A new approach to gene editing using the CRISPR/Cas9 system bypasses disease-causing mutations in a gene, enabling treatment of genetic diseases linked to a single gene, such as cystic fibrosis, certain types of sickle cell anemia, and other rare diseases.

21 Apr 2021

Japanese–European scientists detect novel genetic mitochondrial disorder

The list of known genetic mitochondrial disorders is ever-growing, and ongoing research continues to identify new disorders in this category.

15 Apr 2021

Could Zebrafish larvae be a novel animal model for SARS-CoV-2?

Researchers based in Paris, France, have explored the potential use of zebrafish larvae as animal models for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). These larvae are small and cheap, so could prove a suitable medium for rapid mass testing of the disease.

13 Apr 2021

Enhanced neutralization of SARS-CoV-2 South African variant with heterologous adjuvant vaccine candidate

A new study describes the use of a single dose of vaccine based on the viral protein called the receptor-binding domain (RBD) to elicit powerful neutralizing activity against both the Wuhan strain and the most concerning VOC called the South African (SA) strain.

7 Apr 2021

Researchers define genetic landscape of uterine leiomyosarcomas

In a new study, Yale Cancer Center researchers have defined the genetic landscape of uterine leiomyosarcomas (uLMS).

6 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

Discovery of cryptic pocket in SARS-CoV-2 may lead to pan-coronavirus therapies

A new research paper published in the Biophysical Journal describes a novel binding pocket used by a viral non-structural protein (nsp) to form an activated complex with its partner nsp. In so doing, it may have revealed a common target that may be useful in the development of a broad-spectrum antiviral drug against all coronaviruses.