

I don’t think so. That would be a hard thing to enforce and rather pointless. Comparing it to other internet regulations like the GDPR, it’s not illegal to use a website that doesn’t adhere to it. That said, with the amount of stupidity we tend to see in politics, who knows what some countries might do.

Read the article. It’s not a traditional vaccine as we know it, but it puts the immune system on a higher alert level in general, meaning it will have faster and stronger responses to any pathogens.
I personally expect that there will be downsides to that, which the researchers do acknowledge. But it’s interesting research nonetheless.