The virus is constantly evolving so the vaccine that worked on the virus a few years ago won't be as effective on the virus that is here today. That's why they keep updating the boosters. Polio only has 3 variants. Luckily, Covid today is weaker than the original virus and those who've had a form of Covid or have been vaccinated are less likely to get seriously ill. Here's some interesting information comparing Covid to polio from your favorite country: https://www.cbc.ca/news/canada/saskatchewan/covid-19-polio-vaccination-1.6405361
The Covid vaccines aren't really a vaccine in the traditional sense, they are just intravenous drugs that you need to keep taking since they just keep mutating like influenza or retroviruses like HIV. On the other hand real vaccines take decades to create & verify so the Covid vaccines were done very quickly. I guess that is the trade-off, less effectiveness for much quicker access. I think the people who believed it was some sort of miracle were exaggerating to say the least. I studied Molecular Biology in college and the mechanism is quite different than the traditional virus <-> antibody interaction.
Some people consider this lying. If it's called a "vaccine" it should do what a vaccine does. The other side of the coin is people didn't like when Trump spoke figuratively about "injecting bleach"... you can't have it both ways. It's my opinion that Trump was clearly speaking figuratively. And, Trump's plain spoken manner is a strength. OTOH the political establishment and medical-industrial complex presented a deceptive half-truth. These political half-truths cause cognitive dissonance. Therefore, you end up with an incensed populous. "A man who tells lies, like me, merely hides the truth. But a man who tells half-lies has forgotten where he put it." -Mr. Dryden
The lies and disinformation never stop, do they? Donald Trump developed. You were against it. NEW YORK (AP) — President Donald Trump is escalating hispromise for a coronavirus vaccinebefore Election Day. But across America, Democrats, independents and even some Republicans do not trust his administration to produce a safe and effective vaccine on such an aggressive timeline. Such hesitancy threatens to exacerbate the public health risk for millions of Americans whenever a vaccine is released. With the Nov. 3 election fast approaching, Democratic officials face a delicate political challenge. Should they attack Trump’s vaccine claims too aggressively, Democrats risk further undermining public confidence in a possible lifesaving medicine while looking as though they are rooting against a potential cure. But if they don’t push back, it makes it easier for Trump to use the real or imagined prospect of a vaccine to boost his reelection campaign. Biden warned against trying to rush out an unfinished vaccine ahead of the Nov. 3 election. Trump, who has accused Biden and his campaign of stoking doubt among Americans about the efficacy of a vaccine, told reporters at the White House later that Biden should stop promoting "anti-vaccine theories." "They're recklessly endangering lives. You can't do that," said Trump, who predicted at least 100 million doses of a coronavirus vaccine could be distributed by the end of 2020.
the vaccine saved millions of lives worldwide by protecting vaccinated infected people from heavy or even life-threatening symptoms. are (people like) you really too dumb to know and understand this - after so many years?
It may have, IDK... since proving a counterfactual is basically impossible and that's the larger question. Nonetheless, let's see if it can save Biden's political career.
As with most things you say, that is not true. We have Dr. Ricter who made the absurd claim that he is one of the world's foremost experts on mRNA vaccines. The shit is getting deep.