You can host a website on a lot less, even. But it entirely depends on what you’re hosting and the load. Basically anything can host a bunch of static pages, so if your site is just that, basically anything will do. You could probably even do a WordPress site with the right caching plugins and serve a reasonable amount of traffic. The first limit you’ll hit realistically is your uplink, not your webserver CPU.
The vaccines don’t contain the bird flu strain, right? So yeah, nobody’s vaccinated against this one.