OK, stop, no. You're conflating two issues here: the minuscule risk of contracting a disease after being vaccinated against it (which is the subject of that video you posted), and the reduced efficacy of vaccines against different strains.Significantly less effective is, again, some more hyperbole. We currently have goose eggs (aka zeroes) across the board for people who've gotten the vaccine and gotten severe enough covid to need to be hospitalized or have died. The vaccines will work well enough against the new strains. It's like the doctors in the video I posted getting mad at people that are like "well, the vaccines aren't 100% effective" and they're like "WHAT THE HELL DO YOU WANT?" There's never going to be 100% safety. The vaccines will make covid less deadly than the flu, you're OK with the risk from the flu, right?
These are plainly very different issues. I'm talking specifically about the latter. On that, "significantly less effective" is not hyperbole.
The point is that the arrival of a vaccine does not mean that we can just return to normality, precautions-be-damned.
See above: we already have evidence that they are resistant. This isn't "worst-case"; this is knowledge that this is how viruses very frequently work, including human coronaviruses and other respiratory tract viruses.You're basing public policy on worst case scenarios and maybes that have very small chances of actually happening. I'm not providing best case scenarios, I'm providing LIKELY case scenarios.
The newer strains won't be resistant, it's not the most optimistic, it's the norm. You think there isn't different strains of all the other viruses we have vaccines for? How'd we get all those viruses down to basically nil if new strains will usually be resistant to vaccines?
What you believe is the norm-- that a vaccine is introduced and then just provides protection forever-- is not accurate. This is why we take additional iterative vaccines. This is why we take a new influenza shot every year; this is why even if you're vaccinated against Tetanus, it's still recommended to go to the doctor and have a new Tetanus jab if you get cut on a rusty nail.
"This kind of stuff wouldn't happen"? Do you seriously believe that because some people in this instance were protected from Measles primarily by T-cells, therefore we can just assume that T-cells alone provide equal protection against all viruses?Antibodies aren't the the only thing that protects you against reinfection. There's quite a decent percentage of people that fight off covid and don't even produce antibodies and the acquire just as good T-cell memory response as those that had produce antibodies.
Science | AAAS
www.sciencemag.org
"More than 150 years ago, a natural experiment on a rocky, volcanic archipelago between Scandinavia and Iceland proved that an infection can trigger lifelong immunologic memory. Measles raced through residents of the Faroe Islands in 1781. The disease did not reappear on the isolated island group for 65 years, when a visitor brought it back. A thorough study found that no one alive during the first outbreak became ill again. Their elderly immune systems remembered and fought off the virus."
You think all those people still had measles antibodies? You think the version of measles that was reintroduced to the island was the same strain of measles 65 years later? If you needed antibodies present to fight infections, this kind of stuff wouldn't happen. If different strains couldn't be fought with past memory immunity, this kind of stuff wouldn't happen. The T-cells prompt the B-cells to produce more antibodies when there's a reinfection.
Once again, you're willing to take single isolated examples, and then consider them the last word on the entire field of virology. You're happy to assume that Covid-19 definitely won't mutate into a vaccine-resistant strain because there's no chance it'll be anything like influenza... and at the same time you're happy to assume that T-cells will provide decades and decades of complete protection, because they did against Measles once before.