Yep, they all have national programs distributing this drug regularly to their populations as I understand it.
It does appear there may be something to ivermectin theory. African countries participating in the WHO program to prevent river blindness have a 28% lower Covid fatality rate (but only 8% lower infection rate) than those that did not, according to statistical studies (not peer reviewed):
https://pubmed.ncbi.nlm.nih.gov/33795896/
https://www.medrxiv.org/content/10.1101/2021.03.26.21254377v1