Variants

Evoluutiobiologi Tuomas Aivelon mukaan on varmaa, että uusia viruskantoja muodostuu jatkossakin. Ihmiset voivat kuitenkin vaikuttaa siihen, kuinka nopeasti ne muodostuvat. Jos tartuntamäärät pysyvät pieninä, variantin kehittyminen kestää suhteellisen kauan.// 7.8.2021

It’s easy to feel despondent or indifferent about the pandemic these days. Here’s a better way to think about Delta.// 6.8.2021

Pandemia etenee ympäri maailman eri tahdissa. Tartuntaryppäitä syntyy eri puolille maailmaa eri aikoina. Tartunnat lisääntyvät ja välillä laantuvat. Se on kuitenkin nähtävissä, että levitessään virus kehittyy. Silloin puhutaan uusista varianteista. Eri virusvarianteilla on erilaisia ominaisuuksia ja se voi olla seuraava haavoittuvuus koronavirukselta suojautumisessa. //8.8.2021

Delta is shockingly contagious. But we can control it. // 6.8.2021

Background The B.1.526 variant (WHO designation: Iota) is a SARS-CoV-2 variant of interest, as classified by both the US CDC and the WHO. Due to a lack of extensive genomic sequencing and contact tracing data, its key epidemiological properties have not been well characterized. // 7.8.2021

The findings reveal that the variant has considerably higher transmissibility and immune escape potential than previously circulating variants and that it can increase the infection fatality rate by 62% - 82% among older adults. // 10.8.2021

Experts say the virus that causes COVID-19 replicates quicker in people who are unvaccinated, increasing the chances it'll mutate into a variant.// 10.9.2021

- Se päivä lähestyy, että ollaan normaalissa, Vapalahti sanoo.// 11.8.2021

HS:n hankkimat tiedot eräästä deltamuunnosketjusta osoittavat, miten tehokkaasti variantti leviää.// 12.8.2021

Nature Structural & Molecular Biology - Cryo-EM structures and functional analyses of the SARS-CoV-2 B.1.1.7 variant spike protein reveal that the A570D mutation creates a molecular switch to…//12.8.2021

A number of SARS-CoV-2 variants of concern (VOC) have been identified that partially escape serum neutralisation activity elicited by current vaccines. // 13.8.2021

Most of the recently risen coronavirus variants of interest or concern -- delta, kappa, epsilon, iota and lambda -- are universally carrying a mutation in amino acid L452 of the Spike protein that helps the virus bind to host cells.// 13.8.2021

Vaccine-beating variant is ‘realistic possibility’, say scientists, amid calls for contingency plans to be // 15.8.2021

A new study, available on the bioRxiv* preprint server, describes the neutralizing ability of the monoclonal antibodies against the variants and the difference of the ACE2 binding affinity found in the variants.// 17.8.2021

Impact of Delta on viral burden and vaccine effectiveness against new SARS-CoV-2 infections in the UK elokuu 2021

Uppsalasta löydetty muunnos on deltan alamuunnos.// 19.8.2021

Nature - People infected with the Delta variant generally do not have COVID-19 symptoms until two days after they start shedding the coronavirus.// 19.8.2021

A new study explores the mechanism by which the SARS-CoV-2 lambda variant has acquired immune evasion capabilities above that of the wildtype.// 20.8.2021

Nature - A key amino-acid change might underlie the coronavirus variant’s ferocious infectivity. //20.8.2021

A new study describes how monoclonal antibodies raised against SARS-CoV-2 are affected by mutations in the antibody binding site.// 21.8.2021

A new study determined the antibody response to SARS-CoV-2 and seasonal viruses induced by BNT162b2-Comirnaty vaccination in healthcare workers.// 23.8.2021

A new study details the genomic characteristics and descent of a SARS-CoV-2 variant of interest.// 23.8.2021

AbstractBackground. he impact of SARS-CoV-2 variants of concern (VOCs) on disease severity is unclear. In this retrospective study, we compared outcomes of.. // 23.8.2021

A team of scientists from Australia has recently identified a frameshift deletion mutation in ORF7a of the delta variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The mutation results in the production of a truncated peptide with altered functionality. //24.8.2021

The study highlights that compared to the previously circulating alpha variant, the delta variant is associated with higher infectious virus load and a lower level of humoral immunity in the upper respiratory tract. //24.8.2021

Nature Communications - Here, the authors show that neutralization of human sera from both BNT162b2 vaccine recipients and from convalescent COVID-19 patients is less efficient against SARS- CoV-2...// 26.8.2021

27.8.2021

Get double-jabbed to reduce this risk, advise experts who have studied different variants of the virus.// 28.8.2021

C.1.2 was first identified in May 2021 during the third wave of Covid-19 in the country, said researchers from the country's National Institute for Communicable Diseases (NICD) and the KwaZulu-Natal Research Innovation and Sequencing Platform// 29.8.2021

Previous Infection Combined with Vaccination Produces Neutralizing Antibodies With Potency Against SARS-CoV-2 Variants // 29.8.2021