AZ, J&J and Sputnik are all viral vector vaccines, which work through a DNA payload. I.e. nothing new.
BS.
Viral vector in the sense of J&J is completely new, and it's just mRNA with extra steps. They get a virus, in this case a chimp adenovirus, and put DNA into it yes. But what happens to it? Once the trojan horse adenovirus gets it into your cells it unpacks and is converted into mRNA, which then tells your cells to make the protein.
The ONLY viral vector rollout in humans before this was ebola, a few thousand in the democratic republic of congo, and like the covid jabs, it was only given emergency authorization in the US and EU in 2019 or so. 2 years old, with very limited rollout in a place you can't really track long term results well.
'Live attenuated' and 'live inactivated' is the old method you might be thinking of, it's where they take the whole virus they mean to immunise you against, like polio. They weaken and kill the thing so that it won't (usually) do any harm as your body learns to fight the whole thing. (the 2 other old methods are subunit, like NOVAVAX, and toxoid, like the tenanus shots)
Viral vector is NOT this old method, it is a means to get DNA into your cells, in order to make them do something. In this case, it is converted into mRNA.
I don't care if the mRNA is directly injected or it has extra steps, these new methods are new and untested. Please stop spreading the misinformation that J&J is in anyway based on old tech. Viral vector just SOUNDS like it is using that old method. It is very new.
Ok fair enough
It's just one of the biggest lies I see floating round, that J&J is old tech, they're trying to trick people wary of the mRNA into taking viral vector, cause it sounds like the live attentuated/inactivation vaccines we've all already had a few of.