In all those countries they extensively use Hydroxychloroquine which is anti malaria drug and super important especially in Africa. Indian government is very open in using it for covid-19: https://www.newsweek.com/india-promotes-hydroxychloroquine-d... As well as many African countries: https://www.voanews.com/covid-19-pandemic/djibouti-treating-... https://www.theafricareport.com/26726/coronavirus-recovery-r...

can provide more sources if requested (or just google it)...