This Ivermectin study has all the same problems you mentioned: https://www.scholarsresearchlibrary.com/articles/effects-of-ivermectin-therapy-on-the-sperm-func

This Ivermectin study has all the same problems you mentioned: https://www.scholarsresearchlibrary.com/articles/effects-of-ivermectin-therapy-on-the-sperm-functions-of-nigerian-onchocerciasis-patients.pdf https://www.scholarsresearchlibrary.com/articles/effects-of-... But then I don't know why you would pick one bad study over another to make your decisions, so I say talk about it. I bring this up specifically because of fears about vaccines and sterility.