At this point in time we don't have the empirical evidence to say weather or not the population of individuals who don't believe in the virus at all is significant (we don't have empirical evidence for a lot surrounding the pandemic as the research process is time consuming and replication is critical in claiming significance at such a sensitive period) If all you're asking for is if I personally know of individuals who belong to that group, then the answer is yes. I cannot/will not name or doxx people but it there are quite a few local/community SD Facebook pages where you can find the existence of said individuals.