Tag: antibodies
mRNA vaccine booster dose antibodies – quantity not quality
“These results suggest that boosting vaccinated individuals with currently available mRNA vaccines would produce a quantitative increase in plasma neutralizing activity but not the qualitative advantage against variants obtained by vaccinating convalescent individuals.” More...
Pfizer and AstraZeneca vaccine antibodies start to wane after six weeks
Blood tests on hundreds of British people revealed that protective antibodies can wane substantially within weeks of second vaccine shots being given. More...
Israel: Previous Covid-19 infection may offer more protection than vaccination
People who have recovered from Covid-19 are around 9% of Israel’s population, but they’re less than 1% of current cases. More...
India: Covaxin and Covishield vaccines invoke 50% fewer antibodies against B.1.617 coronavirus variant
Scientists at the Indian National Institute of Virology (NIV), Pune, have found that both Covaxin and Covishield produce half as many antibodies against the B.1.617 variant of the novel coronavirus as against the ‘original’ B.1 variant. More...
SARS-CoV-2 coronavirus variants from mink evade inhibition by antibodies
“Our results show that one of two antibodies from an antibody cocktail used for COVID-19 therapy no longer efficiently inhibits the viral variant with the Y453F mutation.” More...
USA: small study shows 17% of household cats and dogs had detectable coronavirus sars-cov-2 neutralizing antibodies
We enrolled 37 dogs and 19 cats from 34 of 41 eligible households. More...
SARS-CoV-2 coronavirus variants B.1.351 and P.1 escape from neutralizing antibodies
“In contrast, entry of the B.1.351 and P.1 variant was partially (Casirivimab) or fully (Bamlanivimab) resistant to antibodies used for COVID-19 treatment. More...
Antibodies for coronavirus found in stray cats and dogs in Rio de Janeiro, Brazil
To investigate previous SARS-CoV-2 exposure, serum samples of all 96 animals were tested for the detection of SARS-CoV-2-neutralizing antibodies. More...
Norway: “there is no other thing than the [AstraZeneca] coronavirus vaccine that can explain that we have received that immune response”
The experts have worked on the basis of a hypothesis that the AstraZeneca vaccines triggered an unexpected immune reaction in the sick health workers, who have triggered the system so that a combination of blood clots and low platelets has been obtained. More...
Antibody resistance of coronavirus variants B.1.351 (SA) and B.1.1.7 (UK)
“Findings on B.1.351 [South Africa variant] are more worrisome in that this variant is not only refractory to neutralization by most NTD mAbs but also by multiple individual mAbs to the receptor-binding motif on RBD, largely owing to an E484K mutation. More...