A recent large study on the controversial drugs chloroquine and hydroxychloroquine was just retracted by The Lancet, the scientific journal that published it.
The study had found that the drugs weren’t able to effectively treat COVID-19, but the authors say that they weren’t able to independently analyze the data used to reach that conclusion.
Soon after the research was published in The Lancet, scientists started to point out problems with the dataset used in the study — it claimed to have data that would have been almost impossible to gather during that time frame, for example.
Just this week, a new study from a team at the University of Minnesota found that taking the drug doesn’t prevent people who’ve been exposed to someone sick with COVID-19 from catching the disease any more than a placebo.
The company was also behind another retracted COVID-19 study, this one published in the New England Journal of Medicine.