That sounds like a common world problem, not anything specifically Brazilian. In my country of 11 million (including Ukrainian refugees), we've had 45 thousand deaths. And anywhere where people frequent Facebook, the anti-vax movement thrives. It is not even specifically far-right, a lot of the crowd belongs to the organic green bio-mom milieu. I can't even begin to count all the middle-aged ladies in colourful ethnic clothing who hate vaccines based on very flimsy arguments.
The coup thing is fairly unique, though.