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The Lancet medical journal on Tuesday issued an “expression of concern” over the validity of a recent study suggesting that the anti-malarial drugs chloroquine and hydroxychloroquine raise the risk of death and heart complications in hospitalized COVID-19 patients.
More than a hundred researchers have raised questions and skepticism about the data and analysis, even as researchers halted clinical trials in light of the study's findings.
The two drugs at the center of the controversy have had a high profile during the pandemic, with many prominent figures—most notably President Donald Trump—promoting them as effective against COVID-19. On May 18, Trump even told reporters that he was taking the drugs himself to prevent infection from the new coronavirus, SARS-CoV-2.
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