Boosters usually last way longer than the first shot.
The problem with flu vaccine is that there are a shit ton of flu viruses and they are all mutating fast. So it’s not just how long the vaccine lasts but whether it will be effective against the next version of seasonal flu.
Yes, but it doesn’t drop off a cliff after 90 days: the quote @SuiGeneris used above can be read to say that at 91 days, all bets are off. But that’s not really the case.
That being said, with one shot of AZ in my arm and my second dose theoretically due in two days (which obviously won’t happen), I do feel like I’ve got a temporary boost in a video game and it’s going to fade fast and oh no what’ll I do when that happens?!
At the same time, we know that the US has been involved in astonishing f-ups too. That ridiculous vaccine factory in Baltimore has been marked by quality control problems and wasted vaccines on a vast scale (both AZ and J&J—Canada just binned a large tranche of the latter due to the problems with quality control).
Based on this incompetence, would I trash every US made vaccine? No. But the authorities do need to watch out and make sure such substandard products are not distributed or jabbed into arms.
correct. I get that they made mistakes. They also corrected them. They have a solid reputation for what, past 100 years, of developing good medical practices and doing research. Which Taiwan pharma company has been exporting quality, locally researched products for a long time?
The J&J situation is actually an example of regulation working. The FDA stepped in, forced J&J to take control of the plant, and has made sure that batches that were potentially contaminated didn’t reach the public.
This is not at all comparable to authorizing a vaccine that has not undergone a standard Phase III trial to establish efficacy.
The Canadian authorities received the J&J they ordered, and determined that that quality control in the production process could not be demonstrated.
In any case, my point is NOT that the US is like the PRC. That’s a ridiculous comparison. And in my view, so is the early attempt in this thread to put Taiwan’s science in the same box as the PRC’s. Sorry!
Canada decided that it didn’t want vaccines made in this facility because it was aware of the issues and didn’t have the ability to inspect the plant itself. Fair enough. That doesn’t mean that the batches it was sent were actually contaminated, or that there was some sort of malfeasance on the part of US regulators.
Again, the FDA stepped in and told J&J it had to fix the issues in the plant, and has forced J&J to dispose of a large number of batches it couldn’t be sure about. That’s exactly what you’d expect a first-world regulator to do.
Why are you continuing to bring the US into this? Like I said, the situations you’re trying to compare are not comparable.
Planning to vaccinate large numbers of people with a vaccine that hasn’t been proven effective through a legitimate Phase III trial is comparable to what the PRC does.
China took an unorthodox and somewhat risky approach to developing its COVID vaccines, rolling them out at a blistering pace and with little transparency early on about their efficaciousness. But the WHO’s endorsement of the jabs confirms that the bets paid off. Now, with the WHO’s blessing, China is positioned to take a lead role in delivering vaccine supplies to the countries that need them most.
It sort of worked out, but now we’re seeing an explosion of cases in some countries where Sinovac and Sinopharm were used, like Chile, Seychelles, Bahrain, to the point that the latter is now giving Pfizer booster doses to vulnerable populations who were originally vaxxed with the Chinese vax.