[“nice video” for those who are not scared by tropical diseases pictures] which helped a million of people?

https://video.search.yahoo.com/video/play;ylt=AwrC5pkJ_Dxgnz0AvWr7w8QF;_ylu=c2VjA3NyBHNsawN2aWQEdnRpZAMEZ3BvcwM1Ng–?p=discovery+of+ivermectin&vid=c2d4bde323284274660806604bcdc482&turl=https%3A%2F%2Ftse2.mm.bing.net%2Fth%3Fid%3DOVP.vwXzmIwerZpTrJHRyqQdowEsDh%26pid%3DApi%26h%3D225%26w%3D300%26c%3D7%26rs%3D1&rurl=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DmUHVIHxQCC0&tit=Parasitic+Diseases+Lectures+%2329%3A+Onchocercaiasis&c=55&h=225&w=300&l=2127&sigr=k1lkJ18OeGn&sigt=FCPKdAE8BakT&sigi=pqD9RrpR9eYI&age=1520716374&fr2=p%3As%2Cv%3Av&fr=mcafee&tt=b