Researchers have identified a new binding site on the spike protein of SARS-CoV-2, the virus that causes COVID-19. They believe the new binding site could be a key part of the process involved in the virus infecting human cells, giving a new target for possible intervention. The new binding site […]
Créditos: Comité científico Covid
The messenger RNA vaccine BNT162b2 (Pfizer–BioNTech) has 95% efficacy against coronavirus disease 2019 (Covid-19).1 Qatar launched a mass immunization campaign with this vaccine on December 21, 2020. As of March 31, 2021, a total of 385,853 persons had received at least one vaccine dose and 265,410 had completed the two doses. […]
An Australian-led study will investigate whether it’s possible to predict who remains susceptible to SARS-CoV-2 variants after having COVID-19 or receiving a COVID-19-specific vaccine. The study will explore the immune response to COVID-19-specific vaccines in Brazilian healthcare workers to find biomarkers that indicate whether someone will be protected from – […]
GENEVA (Reuters) – Coronavirus variants with clunky, alphanumeric names have now been assigned the letters of the Greek Alphabet in a bid to simplify discussion and pronunciation while avoiding stigma. The World Health Organization revealed the new names on Monday amid criticism that those given by scientists – such as […]
What are the SARS-CoV-2 variants circulating at this time? How are variants classified as variants of interest or concern? What does this mean for the public? WHO’s COVID-19 Technical Lead Dr Maria Van Kerkhove explains in this Science in 5 video. https://www.facebook.com/whowpro/videos/312398667110502 What are the SARS-CoV-2 variants circulating at […]
Real-world effectiveness “easily as good, if not better” than trials Growing real-world evidence suggests that available COVID-19 vaccines are highly protective against known SARS-CoV-2 strains, including those designated as variants of concern by the CDC, according to NIAID Director Anthony Fauci, MD. In the opening keynote address at the American Thoracic […]
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a member of a diverse family of enveloped, nonsegmented RNA viruses. The coronavirus genomic RNA is unusually large, the RNA polymerase is error-prone, and mutations accumulate with increasing frequency during infections. With continued uncontrolled transmission and viral replication, mutations that give the […]
Editor’s note: Find the latest COVID-19 news and guidance in Medscape’s Coronavirus Resource Center. Medscape Medical News Editor-in-Chief Eric Topol, MD, founder and director of the Scripps Research Translational Institute and professor of molecular medicine, has been closely following COVID-19 data since the pandemic began. He spoke with writer Miriam E. […]
Summary Emerging variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are of clinical concern. In a cohort of 417 persons who had received the second dose of BNT162b2 (Pfizer–BioNTech) or mRNA-1273 (Moderna) vaccine at least 2 weeks previously, we identified 2 women with vaccine breakthrough infection. Despite evidence of […]
