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Findings opposed to the use of chloroquine as a COVID-19 intervention

Findings from a multinational registry of patients hospitalized for COVID-19 between December 2019 and April 2020 oppose the use of chloroquine as an intervention. Compared to an untreated control group, individuals treated with chloroquine had a higher risk of:

  • In-hospital mortality
  • Clinically significant ventricular arrhythmia

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Updated 2026-07-03

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SARS-CoV-2 (COVID-19)

Biomedical Sciences