Variants

Variants

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Delta ei jää viimeiseksi: Luvassa on nykyisen rokotteen paremmin kiertäviä uusia koronavariantteja, biologi varoittaa ja arvioi, mistä seuraava tehovirus saa alkunsa
Delta ei jää viimeiseksi: Luvassa on nykyisen rokotteen paremmin kiertäviä uusia koronavariantteja, biologi varoittaa ja arvioi, mistä seuraava tehovirus saa alkunsa
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
·mtvuutiset.fi·
Delta ei jää viimeiseksi: Luvassa on nykyisen rokotteen paremmin kiertäviä uusia koronavariantteja, biologi varoittaa ja arvioi, mistä seuraava tehovirus saa alkunsa
The Atlantic Daily: A Nuanced Guide to Delta
The Atlantic Daily: A Nuanced Guide to Delta
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
·theatlantic.com·
The Atlantic Daily: A Nuanced Guide to Delta
Ihmiskunta käy nyt kilpajuoksua koronaa vastaan – mitä laajempia tartuntaketjuja syntyy, sitä tehokkaammin Covid-19 muuntuu selvitäkseen
Ihmiskunta käy nyt kilpajuoksua koronaa vastaan – mitä laajempia tartuntaketjuja syntyy, sitä tehokkaammin Covid-19 muuntuu selvitäkseen
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
·mtvuutiset.fi·
Ihmiskunta käy nyt kilpajuoksua koronaa vastaan – mitä laajempia tartuntaketjuja syntyy, sitä tehokkaammin Covid-19 muuntuu selvitäkseen
Epidemiological characteristics of the B.1.526 SARS-CoV-2 variant
Epidemiological characteristics of the B.1.526 SARS-CoV-2 variant
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
·medrxiv.org·
Epidemiological characteristics of the B.1.526 SARS-CoV-2 variant
SARS-CoV-2 Iota variant increases mortality risk among older adults
SARS-CoV-2 Iota variant increases mortality risk among older adults
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
·news-medical.net·
SARS-CoV-2 Iota variant increases mortality risk among older adults
Effect of SARS-CoV-2 B.1.1.7 mutations on spike...
Effect of SARS-CoV-2 B.1.1.7 mutations on spike...
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
·nature.com·
Effect of SARS-CoV-2 B.1.1.7 mutations on spike...
L452R mutations may have triggered the emergence of several COVID-19 variants
L452R mutations may have triggered the emergence of several COVID-19 variants
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
·news-medical.net·
L452R mutations may have triggered the emergence of several COVID-19 variants
How delta and kappa variants of SARS-CoV-2 evade the immune system
How delta and kappa variants of SARS-CoV-2 evade the immune system
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
·news-medical.net·
How delta and kappa variants of SARS-CoV-2 evade the immune system
New studies
New studies
Impact of Delta on viral burden and vaccine effectiveness against new SARS-CoV-2 infections in the UK elokuu 2021
·ndm.ox.ac.uk·
New studies
Delta’s rise is fuelled by rampant spread from...
Delta’s rise is fuelled by rampant spread from...
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
·nature.com·
Delta’s rise is fuelled by rampant spread from...
Expansion of seasonal betacoronavirus antibodies post-vaccination is associated with reduction in neutralization of the SARS-CoV-2 variants of concern
Expansion of seasonal betacoronavirus antibodies post-vaccination is associated with reduction in neutralization of the SARS-CoV-2 variants of concern
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
·news-medical.net·
Expansion of seasonal betacoronavirus antibodies post-vaccination is associated with reduction in neutralization of the SARS-CoV-2 variants of concern
Clinical and virological features of SARS-CoV-2 variants of concern: a retrospective cohort study comparing B.1.1.7 (Alpha), B.1.315 (Beta), and B.1.617.2 (Delta)
Clinical and virological features of SARS-CoV-2 variants of concern: a retrospective cohort study comparing B.1.1.7 (Alpha), B.1.315 (Beta), and B.1.617.2 (Delta)
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
·academic.oup.com·
Clinical and virological features of SARS-CoV-2 variants of concern: a retrospective cohort study comparing B.1.1.7 (Alpha), B.1.315 (Beta), and B.1.617.2 (Delta)
Frameshift deletion mutation in ORF7a may provide fitness advantage to Australia's SARS-CoV-2 delta variants
Frameshift deletion mutation in ORF7a may provide fitness advantage to Australia's SARS-CoV-2 delta variants
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
·news-medical.net·
Frameshift deletion mutation in ORF7a may provide fitness advantage to Australia's SARS-CoV-2 delta variants
SARS-CoV-2 Delta variant associated with more breakthrough infections
SARS-CoV-2 Delta variant associated with more breakthrough infections
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
·news-medical.net·
SARS-CoV-2 Delta variant associated with more breakthrough infections
Neutralization of SARS-CoV-2 variants by...
Neutralization of SARS-CoV-2 variants by...
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
·nature.com·
Neutralization of SARS-CoV-2 variants by...
South Africa detects new Covid-19 variant C.1.2
South Africa detects new Covid-19 variant C.1.2
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
·mid-day.com·
South Africa detects new Covid-19 variant C.1.2