West Bengal bans flights from UK; nearly 50% fresh cases in Delhi of Omicron

West Bengal bans flights from UK; nearly 50% fresh cases in Delhi of Omicron

The disease might very likely be mild as some past exposure creates immunity that reduces the likelihood of hospitalisation and death
It is controversial whether viruses are alive, but – like all living things – they do evolve. This fact has become abundantly clear during the pandemic, as new variants of concern have emerged every few months. Some of these variants have been better at spreading from person to person, eventually becoming dominant as they out-compete slower versions of SARS-CoV-2, the virus that causes COVID-19. This improved spreading ability has been ascribed to mutations in the spike protein – the mushroom-shaped projections on the surface of the virus – that allow it to bind more strongly to ACE2 receptors. ACE2 are receptors on the surface of our cells, such as those that line our airways, that the virus attaches to in order to gain entry and start replicating.
These mutations allowed the alpha variant, and then the delta variant, to become globally dominant. And scientists expect the same thing to happen with omicron. The virus cannot, however, improve indefinitely. The laws of biochemistry mean that the virus will eventually evolve a spike protein that binds to ACE2 as strongly as possible. By that point, the ability of SARS-CoV-2 to spread between people will not be limited by how well the virus can stick to the outside of cells. Other factors will limit virus spread, such as how fast the genome can replicate, how quickly the virus can enter the cell via the protein TMPRSS2, and how much virus an infected human can shed. In principle, all of these should eventually evolve to peak performance.
60 mn followers on TwitterThe followers of PM Modi on Twitter have risen to 60 million. Modi uses Twitter extensively to share important information with the people. Most of his addresses are beamed live on his personal Twitter handle. Modi, who joined Twitter in January 2009, is following 2,354 accounts. In September 2019, he had 60 million followers.
At the 14th BRICS summit which is to be hosted by China in a virtual mode on 23-24 June, the member nations will review the current gl...