There is some disagreement about whether the drug ivermectin is effective in preventing, or in the early treatment of COVID-19. The argument in favor of the effectiveness of the drug for these purposes rests mainly (or so I understand) on some studies which have been done, along with a meta-analysis of many such studies studies. Some say the studies are flawed and some declare the studies which show the greatest effectiveness to be definitive. Others say that those studies are not valid. This argument map is an attempt to get to the heart of the issue, to present all sides and to achieve something close to a shared reality on these topics.