Clinical Trial Exploring Hydroxychloroquine Against COVID-19 Enrolls First Patients

An arrangement of hydroxychloroquine pills in Las Vegas, Nev., on April 6, 2020. John Locher/AP Photo

A clinical trial testing hydroxychloroquine, a malaria drug, on patients hospitalized with COVID-19, has started.

The trial, expected to involve 510 patients, is estimated to be completed in July 2021.