There is a kind of pandemic - but one that mainly impacts the sick and elderly. As much as this ever was a pandemic, it certainly will not be over in 2 years or even 10 years. The coronavirus and various versions of it will be another circulating virus like influenza that continues to circulate around the world. As much as this is a pandemic now, it will likely continue to be one in the future. Sometimes less deadly and sometimes more deadly just like influenza except we can expect more surprises from the Coronavirus because it is a new bat virus that is partly engineered in Wuhan China. I think that the Coronavirus could very easily have a wider variability than influenza meaning sometimes very mild and sometimes very deadly.
I don't trust the data from Brazil. I do trust earlier data prior to covid on IVM and it does have some anti-viral activity for some virus and works as an anti-inflammatory drug.
I don't trust data with 7,000 sicker older patients with zero deaths. Had IVM worked perfectly - there would still be some deaths and they would have happened to occur when the patient was infected with covid-19. That is because with 7,000 older sicker patients, at least 100 would die of various causes in a six-month time and it would be difficult for the medical examiner to perfectly attribute the causes. Example, a patient died and had covid-19 but also was elderly, had heart disease, diabetes, kidney disease and was declining rapidly. Had the patient not had covid-19, he would die in 4 to 6 weeks. But since he had an infection with covid-19 (or any other virus or bacterial infection) he died slightly earlier. It is really difficult to believe 0 deaths out of 7,000 older sicker patients even if you have a miraculous medicine against covid-19.
Assuming IVM works as an antiviral and reduces the number of viruses by reducing the rate of spread, this can both force adaptation. The viruses in the body that do the best job of reproducing when IVM is used are also the most likely to be released and infect others.