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An assay capable of detecting SARS-CoV-2 antibodies in breast milk and other samples

In a recent study by US researchers (currently available on the medRxiv* preprint server), a specific immunoassay based on the spike glycoprotein’s receptor-binding domain (RBD) of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is not only well suited for the detection of antibody response after infection and vaccination but may also represent a method of choice when conducting seroepidemiological studies.

19 Jul 2021

Pfizer-BioNTech and Moderna COVID-19 vaccines establish recall responses to reinfection

Researchers in the United States have conducted a study showing that the coronavirus disease 2019 (COVID-19) vaccines developed by Pfizer-BioNTech and Moderna generate a coordinated adaptive immune response that is capable of eliciting recall responses to future infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

18 Jul 2021

How do immunocompromised patients respond to COVID-19 vaccines?

The COVID-19 vaccines produce a boost in antibody activity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, new research suggests vaccine responses aren’t all created equal. Their findings showed that immunocompromised patients, such as transplant recipients, with no prior exposure to SARS-CoV-2 produce little to no neutralizing antibodies.

18 Jul 2021

Rapid COVID-19 antibody detection with time‐resolved fluorescence immunoassay

A new study published in the journal Biotechnology and Applied Biochemistry deals with the development of a time-resolved fluorescence immunoassay (TRFIA) for the detection of total COVID-19 antibodies in humans.

15 Jul 2021

Neutralizing aptamers block SARS-CoV-2 infection in vitro

A new study describes the clinical utility of aptamers against SARS-CoV-2.

13 Jul 2021

Blood test could be a simple and effective method for monitoring SARS-CoV-2 infection

A blood test that quantifies the protein ACE2, the cellular protein which allows entry of the coronavirus into cells, as well as ACE2 fragments, produced as a result of interaction with the virus, could be a simple and effective method for monitoring SARS-CoV-2 infection, according to a study led by Javier Sáez-Valero, from the UMH-CSIC Neurosciences Institute in Alicante, published in FASEB Journal.

13 Jul 2021

SARS-CoV-2 antibody testing in oral fluids may be an efficient way forward for research in children

A recent study by researchers from the United Kingdom (UK) and Brazil shows how laboratory assays based on the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies in oral fluids can be used as a suitable tool for population-based seroepidemiology studies in children. The paper is currently available on the medRxiv* preprint server while it undergoes peer review.

8 Jul 2021

Breakthrough SARS-CoV-2 infection among fully vaccinated likely to be less transmissible

Researchers in the United States have conducted a study suggesting that individuals fully vaccinated against coronavirus disease 2019 (COVID-19) who develop breakthrough infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are less likely to transmit the virus to others than unvaccinated infected individuals.

8 Jul 2021

Study shows antibody titers after natural SARS-CoV-2 infection last longer than previously thought

A recent study by researchers from the United Kingdom (UK) revealed that antibody levels associated with protection against reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are likely to last from 1.5 to 2 years on average and that the protection from severe infection may be present for several years.

7 Jul 2021

New clinical and prognostic characteristics discovered in solid organ recipients with COVID-19

Researchers from 12 Spanish hospitals took part with the aim of uncovering clinical and prognostic characteristics in solid organ recipients with COVID-19. The conclusions underscore the need for strict preventive measures in the initial period after transplantation.

2 Jul 2021

Antibody development against SARS-CoV-2 following Moderna vaccine

In a paper recently uploaded to the preprint server medRxiv* by Belda et al. (June 27th, 2021) two seroconversion panels containing the sera of individuals that received the Moderna (mRNA-1273) vaccine are compared, and the impact on neutralizing IgG antibody titers in these individuals is analyzed.

30 Jun 2021

Novel biosensor offers rapid quantitative variant of concern-independent serology for SARS-CoV-2

Even as herculean efforts are being made to extend the reach of vaccination against COVID-19 to all the regions of the world, there is a dire need for rapid and sensitive tests to assess the antibody response to the various vaccines used and to monitor antibody titers over time. A new preprint describes a new approach to this problem which could be applied to other molecules of interest as well, both in laboratories and at the point of care.

25 Jun 2021

Airborne pollen grains facilitate spread of COVID-19 by carrying SARS-CoV-2 particles

Computer models simulating the movement of pollen grains from trees in crowded areas could accelerate the spread of COVID-19.

23 Jun 2021

Does SARS-CoV-2 alter the expression of molecules involved in the homeostasis of blood pressure?

A recent study finds that COVID-19 alters the expression of several molecules involved in the homeostasis of blood pressure.

22 Jun 2021

Study shows a robust immune response to COVID-19 vaccine in breastfeeding health workers

A recent study by researchers from Poland, published in the journal Vaccines, shows how levels of IgA and IgG antibodies specific to the spike glycoprotein of SARS-CoV-2 increase in both breast milk and serum samples of mothers following vaccination against COVID-19 – with important implications for further vaccine planning endeavors.

21 Jun 2021

Study shows that COVID-19 was present in five U.S. states in December 2019, even before the first reported case in China

In a recent study, a group of researchers aimed to identify exactly how early SARS-CoV-2 was circulating throughout the United States.

21 Jun 2021

Indian WHO study examines COVID-19 susceptibility in children versus adults

Now, a group of researchers from India have explored this concept due to the lack of solid evidence and have undertaken a community and population-based serosurveillance study for the coronavirus infection under the World Health Organisation (WHO) Unity umbrella. In this study, participants older than two years old were compared to older adults in terms of seropositivity.

17 Jun 2021

New antibody testing study finds evidence of early COVID-19 infections in the U.S.

A new antibody testing study examining samples originally collected through the National Institutes of Health's All of Us Research Program found evidence of SARS-CoV-2 infections in five states earlier than had initially been reported.

15 Jun 2021

Humoral innate pattern recognition molecules against SARS-CoV-2

In a paper recently uploaded to the preprint server medRxiv by Garlanda et al. (June 8th, 2021), humoral pattern recognition molecules are explored for affinity towards SARS-CoV-2, contributing to unraveling the role of these molecules in COVID-19 disease progression.

13 Jun 2021

SARS-CoV-2 infection detected in a poodle living with a COVID-19 positive family

Researchers in Italy identified a case of reverse zoonosis wherein animals contract the virus from humans. The team detected SARS-CoV-2 in a healthy poodle living with four family members who had COVID-19.

11 Jun 2021