Ethan
Money List Winner
A virologist was talking about this on Sunday. He was quite relaxed about it incidentally, not running around screaming, hands in the air. He described the new variant as 'more sticky'. I love that phrase. Apparently it grabs onto you, your cells or whatever and is harder to shake off. Whereas a small dose of the original could be knocked off, beaten up by your system, this new one clings on and stays on you, thus increasing its chances of the infection taking hold. How much or little is needed I don't know but presumably it is less.
All normal according to this bloke, a natural evolution of the virus. He wasn't worried so oddly it made me very calm about it. The vaccine is still the answer, it is rolling out. We just have to keep sensible until more of us have been jabbed. Not different to before really.
He is not wrong. Virus enters cells by binding to a receptor. Essentially a part of the virus, in this case the spike protein, is shaped such that it roughly its into another shaped protein on the epithelium (lining of mouth, throat, lungs). Think trying to findthe right size of Phillips head screwdriver for a slightly stuck screw head. This variant has a slightly better fit than previous versions, so it has a better shot at opening it up and entering the cell, where it will start replicating. A virus is basically a mobile gene factory. With evolution, which for viruses is days/weeks/months, some of the viruses which fit just a shade better take over and squeeze out the rest, and then it repeats.
It isn't just one virus trying this, it is a small army. It appears this variant comes in larger numbers, so makes more attempts, and each attempt is slightly more likely to succeed. Taken together, that is a big rise in transmissibility.
It was inevitable that Tier 4 would have to broaden, and they aren't done yet.