re: Heard Will Cain say J and J vaccine is only 3% effective

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The delta variant has changes to the spike protein. And it’s been demonstrated that infected vaccinated people have just as much virus in their body as unvaccinated.

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It has one change that I recall. A proline to arginine in the furin binding site. It’s still a highly conserved sequence (I mean only the glycoproteins S sequence). The mRNA design was purposeful, although I would argue that adding one more site among the sites that are highly conserved might have been the best strategy. Given the rates of hospitalization, it’s hard to argue that the mRNA vaccines aren’t having an effect.