'The story of how hydroxychloroquine was anointed the Trump administration’s miracle drug for the coronavirus pandemic is a distinctly modern tale of misinformation within a global information ecosystem beset by widespread uncertainty, fear, media fragmentation and hyper-partisanship. Belief in the drug’s potential to cure patients infected with the virus followed an extraordinary trajectory from a small study conducted in France (Trump’s “very good test”) to Silicon Valley social media influencers, Fox News and the largest bully pulpit: the White House'

https://www.theguardian.com/world/2020/apr/06/hydroxychloroquine-trump-coronavirus-drug