Convalescent Plasma News and Research

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Study explores adverse effects of SARS-CoV-2-induced antibody responses

The authors of a research paper published in the journal Frontiers in Immunology used Sandwich ELISA tests to determine the distribution of IgG sub-classes and complement activation levels in plasma from convalescent individuals.

25 Nov 2021

Impeding SARS‑CoV‑2 evolution by targeting low-probability stochastic events

Researchers explore the emergence of more fit SARS-CoV-2 variants using a stochastic evolutionary modeling framework during long-term infections.

24 Nov 2021

Similar antibody responses to spike protein in COVID-19 survivors and vaccine recipients

Researchers conducted a study on COVID-19 convalescent patients and post-vaccinated populations to identify the minimal levels of antibody required to protect against SARS-CoV-2 infection.

24 Nov 2021

Comparing effectiveness of virus and patients-centered strategies to reduce COVID-19 mortality

Researchers from Sorbonne Université have been reviewing papers exploring different anti-COVID-19 drugs.

19 Nov 2021

Rapid finger stick test to detect antibodies against SARS-CoV-2 variants

A new preprint reports a semi-quantitative test that can measure neutralizing antibodies to the SARS-CoV-2 pathogen at the point of care, using a finger stick or venipuncture blood.

16 Nov 2021

Analysis of immunodeficient patients granted REGEN-COV under compassionate use COVID-19 program

A team of scientists describe the safety and response to REGEN-COV® for COVID-19 patients with immunodeficiency-associated antibody disorders.

11 Nov 2021

The SARS-CoV-2 Beta variant evades Fc effector function by ancestral strain, study says

A new study finds improved Fc cross-reactivity against certain SARS-CoV-2 variant of concern.

10 Nov 2021

Convalescent plasma post-vaccination increases binding and neutralizing antibodies against SARS-CoV-2 variants

A recent study assesses the boost in antibodies against SARS-CoV-2)variants post-vaccination in plasma samples from previously infected COVID-19 patients.

7 Nov 2021

Antibody response of COVID-19 patients to SARS-CoV-2 and seasonal coronaviruses

Scientists conducted a cohort study and measured the prevalence and the levels of antibody responses to the nucleocapsid protein of SARS-CoV-2 and four seasonal human coronaviruses.

3 Nov 2021

SARS-CoV-2 neutralizing antibodies discovered in a 20-year-old human antibody library

In an article published in the open-access journal Advance Engineering, a multinational team of researchers reported the selection and characterization of 3 potent SARS-CoV-2 antibodies - S-E6, S-B8, and S-D4 - from a pre-COVID-19 human combinatorial antibody library that was established 20 years ago.

3 Nov 2021

Isolation of potent neutralizing monoclonal antibodies using nanoparticles displaying SARS-CoV-2 S glycoprotein

A new study aimed to identify several potent neutralizing RBD-directed and NTD-directed mAbs that used a nanoparticle displaying the S glycoprotein to capture SARS-CoV-2-specific B cells.

2 Nov 2021

SARS-CoV-2 variants neutralized by camel nanobodies

Researchers from the US recently isolated two VHH nanobodies - 7A3 and 8A2 - from dromedary camels (Camelus dromedaries) using phage display. These nanobodies were found to have a high affinity for the spike RBD and broad neutralization abilities against SARS-CoV-2 and its variants.

2 Nov 2021

Evidence antibodies targeting HCoV-OC43 are robustly boosted in response to SARS-CoV-2 but not vaccination

The magnitude of cross-reactive antibodies correlated well with responses to the SARS-CoV-2 spike protein and the S2 subdomain.

1 Nov 2021

Emerging SARS-CoV-2 variant A.30 efficiently evades vaccine-induced immunity

A recent study published in the journal Cellular & Molecular Immunology shows that a new A.30 variant of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can evade vaccine-induced antibodies and might spread outside the lungs extraordinarily well, with important implications for our public health response.

1 Nov 2021

New Canadian serology solution for SARS-CoV-2 infections and vaccination

A new study developed a “Made-in-Canada” solution for enabling scalable and reproducible SARS-CoV-2 serology.

31 Oct 2021

SARS-CoV-2 cocktail with three antibodies potent in preclinical testing

Amidst growing concerns on the use and potential benefits of convalescent plasma therapy, a research group in the United States has identified three human antibodies (Abs) that, when combined, demonstrate both robust viral suppressive properties against all tested severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Variants of Concern (VoC) in vitro and profound antiviral efficacy in vivo.

22 Oct 2021

Serologic testing algorithm to detect disparities in SARS-CoV-2 infection prevalence and vaccination uptake

A new study recently published on the medRxiv* preprint server demonstrates the use of a serological testing algorithm for identifying disparities in infection rates and vaccine uptake amongst the study population to enable public health interventions.

17 Oct 2021