Your comment has changed several times, so i apologize if my reply is out-of-date!
The CDC web site is good, but a portion of people will say “That’s the Government” and thus be turned off. I don’t like it, but that’s the way it is, so we need to account for that (while working to change it, of course!).
As for Khan Academy, I didn’t know they had videos on this, and that’s cool! But there’s a large population who doesn’t know about it, and so won’t rank its videos any higher than other videos.
I am curious, does Khan Academy advertise on Fox News? I’m not trying to be flippant, I’m just noting that repetition breeds familiarity, and familiarity breeds trust.
Ideally, your PCP would be able to direct you to specific videos, and vouch for their content. But that might result in a conversation, and conversations take time that they don’t have. If Khan Academy was better-known among all segments of the population, then a quick pointer to one of their videos would be better-received!