The public's. That information is widely available in easy to understand formats in every language. People spreading misinformation is not the fault of scientists.
Blame the public for poor science communication? No. Its not the public’s fault for science communication being ineffective about something that involves the public. Even the CDC realizes has badly they flubbed their communications for the pandemic.
You also had Fauci and President Biden spreading the message of vaccine created immunity until the vaccine was found to be ineffective on preventing delta variant.
The popular understanding of vaccines prior to COVID was vaccines worked to prevent disease. Even the flu vaccine were generally effective at preventing you from catching the flu. Covid vaccines were extremely ineffective at preventing COVID. Almost every vaccinated person I know has had it, some folks have had it multiple times. Only when it was evident that the Covid vaccines were essentially ineffective as a preventative, you saw the communications strategy shift to “prevents severity”, but even that seems to be a pretty dubious claim in hindsight.
I recall science journalists spreading the concept of sterilizing immunity with regard to the covid vaccines even comparing them to small pox vaccine and invoking the concept of herd immunity which cannot and will not be possible with this disease. That is not a public fault.
Does my source matter or will you disagree with the point I'm making anyway? As I said, it is recollection of news clips and twitter from CDC officials/accounts, it would take some time to find and I'm not exactly willing to go through the effort if you will not first dispute the point.
Show me the source then we'll see lol. I can't imagine the CDC pushing out informational materials that claim complete protection/immunity from any of the coronaviruses.
Of course its not that, its: "We eradicated Smallpox with the vaccine, get your Covid shot so we can beat Covid!" In an infographic which makes it impossible to search for.