Category: Science
Scientific articles about the coronavirus
UK: 1600 cases of Delta variant B.1.617.2 in Britain, now at >8% of total
According to the Covid-19 genomics UK consortium database, in sequences up to 11th May, there have been 1,604 instances of B.1.617.2, making it the second most common variant in the UK. More...
Just 2% of coronavirus−positive individuals carry 90% of the virus circulating in communities
We analyzed data from saliva-based COVID-19 screening deployed on the University of Colorado Boulder campus. More...
France: Breton coronavirus variant B.1.616 – “A new Sars-Cov-2 variant poorly detected by RT-PCR on nasopharyngeal samples, with high lethality”
We report a nosocomial outbreak of COVID-19 cases related to a new variant, B.1.616, characterized by poor detection by RT-PCR tests on nasopharyngeal samples despite typical clinical, radiological, and biological features of COVID-19. More...
Mink: 100% infection, recovery and then 75% re-infection of farmed mink
On a mink farm with about 15,000 animals, over 75% tested positive for SARS-CoV-2 RNA in throat swabs and 100% of tested animals were seropositive. More...
Seychelles: a population of 100,000 that has 900 coronavirus vaccine breakthrough cases
Covid-19 cases in The Seychelles, where 57% of the population have been fully inoculated with Sinopharm shots, increased to 2,486 people – 37 per cent of whom have had two doses of the vaccine. More...
A coronavirus variant with T205I and D399N mutations that affects antigen test performance
“While determining the analytical sensitivity of the Quidel Sofia SARS 24 Antigen FIA test (Sofia 2), we uncovered a high viral load specimen that repeatedly tested negative by this antigen test. More...
UK: surge testing for Delta coronavirus variant in Nottingham
Targeted testing is to start in Nottingham, UK for two weeks after a rise in cases of the Indian variant of Covid.
BMJ: cerebral venous thrombosis about 20 times more common after AstraZeneca vaccine
The risk of thrombosis at 11 excess events per 100 000 vaccinations are higher than estimated by the European Medicines Agency. More...
CDC: airborne coronavirus infection possible at distances greater than six feet
Transmission of SARS-CoV-2 can occur from inhalation of virus in the air farther than six feet from an infectious source. More...
India: 16% vaccine breakthrough in Delhi hospital coronavirus study
A small-scale study on 113 healthcare workers who had received at least one vaccine dose at a private hospital in Delhi found that 18 tested positive for Covid but all except one had mild symptoms. More...