The rapid and mass distribution of the “Delta” -Tamma coronavirus can be explained by its increased ability to replicate and reduced sensitivity to neutralizing antibodies. This conclusions came the international team of scientists, whose article was published in the Nature magazine.
Researchers from India together with colleagues from Europe and Japan compared the characteristics of various options for SARS-COV-2. Lab experiments have shown that compared with the “Wuhan” variants of the Coronavirus “Delta” -Stam, six times less sensitive to antibodies that have suffered infection and at eight to antibodies produced by people after vaccinating Pfizer and Astrazeneca preparations. In the reproducing respiratory tract of man models and organoids, he was replicated more efficiently than “alpha” – and “kappa” -samma. According to scientists, this is explained by the split form of the S-protein at the Delta version, allowing it to penetrate it more effectively into the cell.
In addition, the researchers studied 130 cases of infection of vaccinated medical workers in three Delhi hospitals and showed that the drug Astrazeneca is less effective against the “Delta” -Stamma than against the other coronavirus options.