No they are saying because Ivermectin was widely used in those 19 countries that their death rate is lower.
Are you saying covid-19 was in those 19 countries between 1995 and 2015? It's called covid-19 because it was manifest in 2019. Put your thinking cap on!
Data from 19 countries that participated in the World Health Organization (WHO) sponsored African Programme for OnchocerciasisControl(APOC), from 1995 until 2015,
