https://www.wired.com/story/the-hype-cycle-for-chloroquine-is-eerily-familiar/

It now appears that the “invisible enemy,” as President Trump calls Covid-19, will not be routed by hydroxychloroquine, the 70-year-old malarial drug that he and his media allies repeatedly hyped as a potential miracle cure.

A preliminary study based on clinical data from researchers in several countries found “no evidence” that hydroxychloroquine is a useful coronavirus-fighting weapon. Additional research funded by the National Institutes of Health and the University of Virginia has recently posted similar findings. So much for Trump’s “game changer.” As one critic in The Washington Post put it, the president “could have let the science lead and his own rhetoric follow.”