Ivermectin is a drug that emerged in the 1970s, used mainly for deworming horses and other livestock.But during the pandemic, it has been falsely lauded in some corners as a kind of miracle cure for the coronavirus.What is fueling the demand for a drug that the medical establishment has begged people not to take?Guest: Emma Goldberg, a writer for The New York Times. Sign up here to get The Daily in your inbox each morning. And for an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. Background reading: Public health warnings against using the anti-parasitic ivermectin as a treatment for Covid-19 appear to have made little progress in stemming its popularity in parts of the United States.Veterinarians, ranchers and farmers say they are struggling with the effects of the surging demand for the drug.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.