Most central Africa countries dispense ivermectin regularly to prevent and treat river blindness. Here's a comparison of how the populations of these countries fared against COVID-19 compared to neighboring countries which did not dispense ivermectin:
https://archive.ph/2021.08.28-042601/https://threadreaderapp.com/thread/1431339779703017477.html
![](https://archive.ph/uqIgF/ef512843b61ad3717ee47f95fc3b55730348ee04.jpg)