This was / is likely a factor in the "kernel of truth" with the whole "deworming tablets cure covid-19" thing, the chances of survival of people in certain areas infected with the virus increased if they were administered deworming medication because they also had a parasitic infection.
Yes my friend took ivermectin recently because he grew up in he Virgin Islands and realized he had likely been harboring parasites his whole adult life. I don’t know if it is placebo but his eating habits changed significantly after his dose